diff --git a/src/Mod/TechDraw/App/Cosmetic.cpp b/src/Mod/TechDraw/App/Cosmetic.cpp
index d2fcaf9778..80070ff38b 100644
--- a/src/Mod/TechDraw/App/Cosmetic.cpp
+++ b/src/Mod/TechDraw/App/Cosmetic.cpp
@@ -107,8 +107,8 @@ std::string LineFormat::toString(void) const
 //static preference getters.
 double LineFormat::getDefEdgeWidth()
 {
-    std::string lgName = Preferences::lineGroup();
-    auto lg = TechDraw::LineGroup::lineGroupFactory(lgName);
+    int lgNumber = Preferences::lineGroup();
+    auto lg = TechDraw::LineGroup::lineGroupFactory(lgNumber);
 
     double width = lg->getWeight("Graphic");
     delete lg; 
diff --git a/src/Mod/TechDraw/App/DrawUtil.cpp b/src/Mod/TechDraw/App/DrawUtil.cpp
index 7ad35d5ff2..6fd468a36b 100644
--- a/src/Mod/TechDraw/App/DrawUtil.cpp
+++ b/src/Mod/TechDraw/App/DrawUtil.cpp
@@ -561,9 +561,8 @@ double DrawUtil::sensibleScale(double working_scale)
 
 double DrawUtil::getDefaultLineWeight(std::string lineType)
 {
-    std::string lgName = Preferences::lineGroup();
- 
-    auto lg = LineGroup::lineGroupFactory(lgName);
+    int lgNumber = Preferences::lineGroup();
+    auto lg = LineGroup::lineGroupFactory(lgNumber);
 
     double weight = lg->getWeight(lineType);
     delete lg;                                    //Coverity CID 174671
diff --git a/src/Mod/TechDraw/App/LineGroup.cpp b/src/Mod/TechDraw/App/LineGroup.cpp
index f9d98785f1..05f3da24d8 100644
--- a/src/Mod/TechDraw/App/LineGroup.cpp
+++ b/src/Mod/TechDraw/App/LineGroup.cpp
@@ -125,62 +125,49 @@ std::vector<double> LineGroup::split(std::string line)
     return result;
 }
 
-//static support function: find group defn in file
-std::string LineGroup::getRecordFromFile(std::string parmFile, std::string groupName)
+//static support function: find group definition in file
+std::string LineGroup::getRecordFromFile(std::string parmFile, int groupNumber)
 {
     std::string record;
-    std::string lineSpec;
     std::ifstream inFile;
     inFile.open (parmFile, std::ifstream::in);
     if(!inFile.is_open()) {
         Base::Console().Message( "Cannot open LineGroup file: %s\n",parmFile.c_str());
         return record;
     }
-
-    bool groupFound = false;
+    // parse file to get the groupNumber'th line
+    int counter = 0; // the combobox enums begin with 0
     while ( inFile.good() ){
          std::string line;
-         std::getline(inFile,line);
-         std::string nameTag = line.substr(0,1);
-         std::string foundName;
-         unsigned long int commaPos;
-         if ((nameTag == ";")  ||
-             (nameTag == " ")  ||
-             (line.empty()) )  {           //is cr/lf empty?
-             continue;
-         } else if (nameTag == "*") {
-             commaPos = line.find(',',1);
-             if (commaPos != std::string::npos) {
-                  foundName = line.substr(1,commaPos-1);
-             } else {
-                  foundName = line.substr(1);
-             }
-             if (foundName == groupName) {
-                 //this is our group
+         std::getline(inFile, line);
+         std::string nameTag = line.substr(0, 1);
+         if (nameTag == "*") { // we found a definition line
+             if (counter == groupNumber) {
                  record = line;
-                 groupFound = true;
-                 break;
+                 return record;
              }
+             ++counter;
         }
     }  //endwhile
-    if (!groupFound) {
-        Base::Console().Message("LineGroup - group: %s is not found\n", groupName.c_str());
-    }
-    return record;
+    // nothing was found
+    Base::Console().Error("LineGroup: the LineGroup file has only %s entries but entry number %s is set\n"
+        , std::to_string(counter).c_str()
+        , std::to_string(groupNumber).c_str());
+    return std::string(); // return an empty string
 }
 
 //static LineGroup maker
-LineGroup* LineGroup::lineGroupFactory(std::string groupName)
+LineGroup* LineGroup::lineGroupFactory(int groupNumber)
 {
-    LineGroup* lg = new LineGroup(groupName);
+    LineGroup* lg = new LineGroup();
 
     std::string lgFileName = Preferences::lineGroupFile();
 
-    std::string lgRecord = LineGroup::getRecordFromFile(lgFileName, groupName);
+    std::string lgRecord = LineGroup::getRecordFromFile(lgFileName, groupNumber);
 
     std::vector<double> values = LineGroup::split(lgRecord);
     if (values.size() < 4) {
-        Base::Console().Message( "LineGroup::invalid entry in %s\n",groupName.c_str() );
+        Base::Console().Error( "LineGroup::invalid entry in %s\n", lgFileName.c_str() );
     } else {
         lg->setWeight("Thin",values[0]);
         lg->setWeight("Graphic",values[1]);
@@ -191,16 +178,47 @@ LineGroup* LineGroup::lineGroupFactory(std::string groupName)
 }
 
 //valid weight names: Thick, Thin, Graphic, Extra
-double LineGroup::getDefaultWidth(std::string weightName, std::string groupName)
+double LineGroup::getDefaultWidth(std::string weightName, int groupNumber)
 {
     //default line weights
-    std::string lgName = groupName;
-    if (groupName.empty()) {
-        lgName = Preferences::lineGroup();
+    int lgNumber = groupNumber;
+    if (lgNumber == -1) {
+        lgNumber = Preferences::lineGroup();
     }
-    auto lg = TechDraw::LineGroup::lineGroupFactory(lgName);
+    auto lg = TechDraw::LineGroup::lineGroupFactory(lgNumber);
 
     double weight = lg->getWeight(weightName);
     delete lg;
     return weight;
 }
+
+//static support function: find group definition in file
+std::string LineGroup::getGroupNamesFromFile(std::string FileName)
+{
+    std::string record;
+    std::ifstream inFile;
+    inFile.open(FileName, std::ifstream::in);
+    if (!inFile.is_open()) {
+        Base::Console().Message("Cannot open LineGroup file: %s\n", FileName.c_str());
+        return record;
+    }
+    // parse the file
+    while (inFile.good()) {
+        std::string line;
+        std::getline(inFile, line);
+        std::string nameTag = line.substr(0, 1);
+        std::string found;
+        unsigned long int commaPos;
+        if (nameTag == "*") {
+            commaPos = line.find(',', 1);
+            if (commaPos != std::string::npos) {
+                found = line.substr(1, commaPos - 1);
+                record = record + found + ',';
+            }
+        }
+    }  //endwhile
+    if (record.empty()) {
+        Base::Console().Message("LineGroup error: no group found in file %s\n", FileName.c_str());
+    }
+    return record;
+}
diff --git a/src/Mod/TechDraw/App/LineGroup.h b/src/Mod/TechDraw/App/LineGroup.h
index 76826741d7..250a9d12cd 100644
--- a/src/Mod/TechDraw/App/LineGroup.h
+++ b/src/Mod/TechDraw/App/LineGroup.h
@@ -47,13 +47,14 @@ public:
     static std::vector<double> split(std::string line);
 
     //static support function: find group defn in file
-    static std::string getRecordFromFile(std::string parmFile, std::string groupName);
+    static std::string getRecordFromFile(std::string parmFile, int groupNumber);
 
     //static LineGroup maker
-    static LineGroup* lineGroupFactory(std::string groupName);
+    static LineGroup* lineGroupFactory(int groupNumber);
 
-    static double getDefaultWidth(std::string weightName,
-                                  std::string groupName = std::string());
+    static double getDefaultWidth(std::string weightName, int groupNumber = -1);
+
+    static std::string getGroupNamesFromFile(std::string FileName);
 
 
 protected:
diff --git a/src/Mod/TechDraw/App/Preferences.cpp b/src/Mod/TechDraw/App/Preferences.cpp
index 433e76ffe8..8080e39ade 100644
--- a/src/Mod/TechDraw/App/Preferences.cpp
+++ b/src/Mod/TechDraw/App/Preferences.cpp
@@ -167,13 +167,13 @@ int Preferences::projectionAngle()
     return projType;
 }
 
-std::string Preferences::lineGroup()
+int Preferences::lineGroup()
 {
     Base::Reference<ParameterGrp> hGrp = App::GetApplication().GetUserParameter().
                                          GetGroup("BaseApp")->GetGroup("Preferences")->
                                          GetGroup("Mod/TechDraw/Decorations");
-    std::string lgName = hGrp->GetASCII("LineGroup","FC 0.70mm");
-    return lgName;
+    int lgInt = hGrp->GetInt("LineGroup", 3); // FC 0.70mm
+    return lgInt;
 }
 
 int Preferences::balloonArrow()
diff --git a/src/Mod/TechDraw/App/Preferences.h b/src/Mod/TechDraw/App/Preferences.h
index ee2ec0e0ea..a61ed000a0 100644
--- a/src/Mod/TechDraw/App/Preferences.h
+++ b/src/Mod/TechDraw/App/Preferences.h
@@ -59,7 +59,7 @@ static bool        useGlobalDecimals();
 static bool        keepPagesUpToDate();
 
 static int         projectionAngle();
-static std::string lineGroup();
+static int         lineGroup();
 
 static int         balloonArrow();
 
diff --git a/src/Mod/TechDraw/Gui/DlgPrefsTechDrawAnnotation.ui b/src/Mod/TechDraw/Gui/DlgPrefsTechDrawAnnotation.ui
index aeb402e876..d629c8566a 100644
--- a/src/Mod/TechDraw/Gui/DlgPrefsTechDrawAnnotation.ui
+++ b/src/Mod/TechDraw/Gui/DlgPrefsTechDrawAnnotation.ui
@@ -6,7 +6,7 @@
    <rect>
     <x>0</x>
     <y>0</y>
-    <width>460</width>
+    <width>415</width>
     <height>447</height>
    </rect>
   </property>
@@ -578,7 +578,7 @@
          </widget>
         </item>
         <item row="3" column="2">
-         <widget class="Gui::PrefLineEdit" name="leLineGroup">
+         <widget class="Gui::PrefComboBox" name="pcbLineGroup">
           <property name="sizePolicy">
            <sizepolicy hsizetype="Preferred" vsizetype="Preferred">
             <horstretch>0</horstretch>
@@ -591,21 +591,15 @@
             <height>0</height>
            </size>
           </property>
-          <property name="toolTip">
-           <string>Default name in LineGroup CSV file</string>
-          </property>
-          <property name="text">
-           <string notr="true">FC 0.70mm</string>
-          </property>
-          <property name="alignment">
-           <set>Qt::AlignRight|Qt::AlignTrailing|Qt::AlignVCenter</set>
-          </property>
           <property name="prefEntry" stdset="0">
            <cstring>LineGroup</cstring>
           </property>
           <property name="prefPath" stdset="0">
            <cstring>/Mod/TechDraw/Decorations</cstring>
           </property>
+          <property name="text" stdset="0">
+           <string/>
+          </property>
          </widget>
         </item>
         <item row="4" column="0">
@@ -698,8 +692,11 @@
             <italic>true</italic>
            </font>
           </property>
+          <property name="toolTip">
+           <string>Line group used to set line widths</string>
+          </property>
           <property name="text">
-           <string>Line Group Name</string>
+           <string>Line Group</string>
           </property>
          </widget>
         </item>
@@ -883,11 +880,6 @@
    <extends>QComboBox</extends>
    <header>Gui/PrefWidgets.h</header>
   </customwidget>
-  <customwidget>
-   <class>Gui::PrefLineEdit</class>
-   <extends>QLineEdit</extends>
-   <header>Gui/PrefWidgets.h</header>
-  </customwidget>
   <customwidget>
    <class>Gui::PrefUnitSpinBox</class>
    <extends>Gui::QuantitySpinBox</extends>
diff --git a/src/Mod/TechDraw/Gui/DlgPrefsTechDrawAnnotationImp.cpp b/src/Mod/TechDraw/Gui/DlgPrefsTechDrawAnnotationImp.cpp
index a0e14677b7..1138893f52 100644
--- a/src/Mod/TechDraw/Gui/DlgPrefsTechDrawAnnotationImp.cpp
+++ b/src/Mod/TechDraw/Gui/DlgPrefsTechDrawAnnotationImp.cpp
@@ -34,6 +34,7 @@
 #include "PreferencesGui.h"
 #include "DlgPrefsTechDrawAnnotationImp.h"
 #include "ui_DlgPrefsTechDrawAnnotation.h"
+#include <Mod/TechDraw/App/LineGroup.h>
 
 
 using namespace TechDrawGui;
@@ -47,6 +48,10 @@ DlgPrefsTechDrawAnnotationImp::DlgPrefsTechDrawAnnotationImp( QWidget* parent )
     ui->setupUi(this);
     ui->pdsbBalloonKink->setUnit(Base::Unit::Length);
     ui->pdsbBalloonKink->setMinimum(0);
+    
+    // connect the LineGroup the update the tooltip if index changed
+    connect(ui->pcbLineGroup, SIGNAL(currentIndexChanged(int)),
+        this, SLOT(onLineGroupChanged(int)));
 }
 
 DlgPrefsTechDrawAnnotationImp::~DlgPrefsTechDrawAnnotationImp()
@@ -61,7 +66,7 @@ void DlgPrefsTechDrawAnnotationImp::saveSettings()
     ui->cbPyramidOrtho->onSave();
     ui->cbSectionLineStd->onSave();
     ui->cbShowCenterMarks->onSave();
-    ui->leLineGroup->onSave();
+    ui->pcbLineGroup->onSave();
     ui->pcbBalloonArrow->onSave();
     ui->pcbBalloonShape->onSave();
     ui->pcbCenterStyle->onSave();
@@ -79,13 +84,27 @@ void DlgPrefsTechDrawAnnotationImp::loadSettings()
     //QAbstractSpinBox
     double kinkDefault = 5.0;
     ui->pdsbBalloonKink->setValue(kinkDefault);
-
+    // re-read the available LineGroup files
+    ui->pcbLineGroup->clear();
+    std::string lgFileName = Preferences::lineGroupFile();
+    std::string lgRecord = LineGroup::getGroupNamesFromFile(lgFileName);
+    // split collected groups
+    std::stringstream ss(lgRecord);
+    std::vector<std::string> lgNames;
+    while (std::getline(ss, lgRecord, ',')) {
+        lgNames.push_back(lgRecord);
+    }
+    // fill the combobox with the found names
+    for (auto it = lgNames.begin(); it < lgNames.end(); ++it) {
+        ui->pcbLineGroup->addItem(tr((*it).c_str()));
+    }
+ 
     ui->cbAutoHoriz->onRestore();
     ui->cbPrintCenterMarks->onRestore();
     ui->cbPyramidOrtho->onRestore();
     ui->cbSectionLineStd->onRestore();
     ui->cbShowCenterMarks->onRestore();
-    ui->leLineGroup->onRestore();
+    ui->pcbLineGroup->onRestore();
     ui->pcbBalloonArrow->onRestore();
     ui->pcbBalloonShape->onRestore();
     ui->pcbCenterStyle->onRestore();
@@ -119,4 +138,29 @@ int DlgPrefsTechDrawAnnotationImp::prefBalloonArrow(void) const
     return Preferences::balloonArrow();
 }
 
+/**
+ * Updates the tooltip of the LineGroup combobox
+ */
+void DlgPrefsTechDrawAnnotationImp::onLineGroupChanged(int index)
+{
+    if (index == -1) { // there is no valid index yet
+        ui->pcbLineGroup->setToolTip(QString::fromStdString("Please select a Line Group"));
+        return;
+    }
+    // get the definition the the selected LineGroup (includes the name)
+    std::string lgRecord = LineGroup::getRecordFromFile(Preferences::lineGroupFile(), index);
+    std::stringstream ss(lgRecord);
+    std::vector<std::string> lgNames;
+    while (std::getline(ss, lgRecord, ',')) {
+        lgNames.push_back(lgRecord);
+    }
+    // format the tooltip
+    std::stringstream TooltipText;
+    TooltipText << lgNames.at(0).substr(1) << " defines these line thicknesses:\n"
+        << "thin: " << lgNames.at(1) << "\n"
+        << "graphic: " << lgNames.at(2) << "\n"
+        << "thick: " << lgNames.at(3);
+    ui->pcbLineGroup->setToolTip(QString::fromStdString(TooltipText.str()));
+}
+
 #include <Mod/TechDraw/Gui/moc_DlgPrefsTechDrawAnnotationImp.cpp>
diff --git a/src/Mod/TechDraw/Gui/DlgPrefsTechDrawAnnotationImp.h b/src/Mod/TechDraw/Gui/DlgPrefsTechDrawAnnotationImp.h
index b0c2c71eba..4704df7d18 100644
--- a/src/Mod/TechDraw/Gui/DlgPrefsTechDrawAnnotationImp.h
+++ b/src/Mod/TechDraw/Gui/DlgPrefsTechDrawAnnotationImp.h
@@ -39,6 +39,9 @@ public:
     DlgPrefsTechDrawAnnotationImp( QWidget* parent = 0 );
     ~DlgPrefsTechDrawAnnotationImp();
 
+public Q_SLOTS:
+    void onLineGroupChanged(int);
+
 protected:
     void saveSettings();
     void loadSettings();
diff --git a/src/Mod/TechDraw/Gui/TaskCenterLine.cpp b/src/Mod/TechDraw/Gui/TaskCenterLine.cpp
index f749e92a34..2906108dc2 100644
--- a/src/Mod/TechDraw/Gui/TaskCenterLine.cpp
+++ b/src/Mod/TechDraw/Gui/TaskCenterLine.cpp
@@ -431,8 +431,8 @@ void TaskCenterLine::enableTaskButtons(bool b)
 
 double TaskCenterLine::getCenterWidth()
 {
-    std::string lgName = Preferences::lineGroup();
-    auto lg = TechDraw::LineGroup::lineGroupFactory(lgName);
+    int lgNumber = Preferences::lineGroup();
+    auto lg = TechDraw::LineGroup::lineGroupFactory(lgNumber);
 
     double width = lg->getWeight("Graphic");
     delete lg;
diff --git a/src/Mod/TechDraw/Gui/TaskLeaderLine.cpp b/src/Mod/TechDraw/Gui/TaskLeaderLine.cpp
index 9cc2ea3812..b44943ab08 100644
--- a/src/Mod/TechDraw/Gui/TaskLeaderLine.cpp
+++ b/src/Mod/TechDraw/Gui/TaskLeaderLine.cpp
@@ -789,8 +789,8 @@ int TaskLeaderLine::getPrefArrowStyle()
 
 double TaskLeaderLine::prefWeight() const
 {
-    std::string lgName = Preferences::lineGroup();
-    auto lg = TechDraw::LineGroup::lineGroupFactory(lgName);
+    int lgNumber = Preferences::lineGroup();
+    auto lg = TechDraw::LineGroup::lineGroupFactory(lgNumber);
     double weight = lg->getWeight("Thin");
     delete lg;                                   //Coverity CID 174670
     return weight;
diff --git a/src/Mod/TechDraw/Gui/TaskRichAnno.cpp b/src/Mod/TechDraw/Gui/TaskRichAnno.cpp
index c679623fad..313a8e71fb 100644
--- a/src/Mod/TechDraw/Gui/TaskRichAnno.cpp
+++ b/src/Mod/TechDraw/Gui/TaskRichAnno.cpp
@@ -333,8 +333,8 @@ void TaskRichAnno::onEditorExit(void)
 
 double TaskRichAnno::prefWeight() const
 {
-    std::string lgName = Preferences::lineGroup();
-    auto lg = TechDraw::LineGroup::lineGroupFactory(lgName);
+    int lgNumber = Preferences::lineGroup();
+    auto lg = TechDraw::LineGroup::lineGroupFactory(lgNumber);
     double weight = lg->getWeight("Graphic");
     delete lg;                                   //Coverity CID 174670
     return weight;
diff --git a/src/Mod/TechDraw/Gui/ViewProviderBalloon.cpp b/src/Mod/TechDraw/Gui/ViewProviderBalloon.cpp
index e7ad512ce5..f88dbb6f09 100644
--- a/src/Mod/TechDraw/Gui/ViewProviderBalloon.cpp
+++ b/src/Mod/TechDraw/Gui/ViewProviderBalloon.cpp
@@ -70,13 +70,13 @@ ViewProviderBalloon::ViewProviderBalloon()
     ADD_PROPERTY_TYPE(Font,(Preferences::labelFont().c_str()),group,App::Prop_None, "The name of the font to use");
     ADD_PROPERTY_TYPE(Fontsize,(Preferences::dimFontSizeMM()),
                                 group,(App::PropertyType)(App::Prop_None),"Balloon text size in units");
-    std::string lgName = Preferences::lineGroup();
-    auto lg = TechDraw::LineGroup::lineGroupFactory(lgName);
+    int lgNumber = Preferences::lineGroup();
+    auto lg = TechDraw::LineGroup::lineGroupFactory(lgNumber);
     double weight = lg->getWeight("Thin");
     delete lg;                                   //Coverity CID 174670
     ADD_PROPERTY_TYPE(LineWidth,(weight),group,(App::PropertyType)(App::Prop_None),"Leader line width");
 
-    ADD_PROPERTY_TYPE(Color,(PreferencesGui::dimColor()),
+    ADD_PROPERTY_TYPE(Color,(PreferencesGui::dimColor()),
                                               group,App::Prop_None,"Color of the balloon");
 }
 
diff --git a/src/Mod/TechDraw/Gui/ViewProviderDimension.cpp b/src/Mod/TechDraw/Gui/ViewProviderDimension.cpp
index ed429f6802..adc0940ae2 100644
--- a/src/Mod/TechDraw/Gui/ViewProviderDimension.cpp
+++ b/src/Mod/TechDraw/Gui/ViewProviderDimension.cpp
@@ -167,12 +167,12 @@ TechDraw::DrawViewDimension* ViewProviderDimension::getViewObject() const
 }
 
 App::Color ViewProviderDimension::prefColor() const
-{
+{
    return PreferencesGui::dimColor();
 }
 
 std::string ViewProviderDimension::prefFont() const
-{
+{
     return Preferences::labelFont();
 }
 
@@ -183,8 +183,8 @@ double ViewProviderDimension::prefFontSize() const
 
 double ViewProviderDimension::prefWeight() const
 {
-    std::string lgName = Preferences::lineGroup();
-    auto lg = TechDraw::LineGroup::lineGroupFactory(lgName);
+    int lgNumber = Preferences::lineGroup();
+    auto lg = TechDraw::LineGroup::lineGroupFactory(lgNumber);
     double weight = lg->getWeight("Thin");
     delete lg;                                   //Coverity CID 174670
     return weight;
diff --git a/src/Mod/TechDraw/Gui/ViewProviderGeomHatch.cpp b/src/Mod/TechDraw/Gui/ViewProviderGeomHatch.cpp
index 72ee6209a9..7f8adc1165 100644
--- a/src/Mod/TechDraw/Gui/ViewProviderGeomHatch.cpp
+++ b/src/Mod/TechDraw/Gui/ViewProviderGeomHatch.cpp
@@ -186,8 +186,8 @@ void ViewProviderGeomHatch::updateGraphic(void)
 
 void ViewProviderGeomHatch::getParameters(void)
 {
-    std::string lgName = Preferences::lineGroup();
-    auto lg = TechDraw::LineGroup::lineGroupFactory(lgName);
+    int lgNumber = Preferences::lineGroup();
+    auto lg = TechDraw::LineGroup::lineGroupFactory(lgNumber);
     double weight = lg->getWeight("Graphic");
     delete lg;                                                    //Coverity CID 174667
     WeightPattern.setValue(weight);
diff --git a/src/Mod/TechDraw/Gui/ViewProviderLeader.cpp b/src/Mod/TechDraw/Gui/ViewProviderLeader.cpp
index 3e4755eb84..434e89a189 100644
--- a/src/Mod/TechDraw/Gui/ViewProviderLeader.cpp
+++ b/src/Mod/TechDraw/Gui/ViewProviderLeader.cpp
@@ -200,8 +200,8 @@ TechDraw::DrawLeaderLine* ViewProviderLeader::getFeature() const
 double ViewProviderLeader::getDefLineWeight(void)
 {
     double result = 0.0;
-    std::string lgName = Preferences::lineGroup();
-    auto lg = TechDraw::LineGroup::lineGroupFactory(lgName);
+    int lgNumber = Preferences::lineGroup();
+    auto lg = TechDraw::LineGroup::lineGroupFactory(lgNumber);
     result = lg->getWeight("Thin");
     delete lg;                                   //Coverity CID 174670
     return result;
diff --git a/src/Mod/TechDraw/Gui/ViewProviderRichAnno.cpp b/src/Mod/TechDraw/Gui/ViewProviderRichAnno.cpp
index a81a2711ad..63e4ea828d 100644
--- a/src/Mod/TechDraw/Gui/ViewProviderRichAnno.cpp
+++ b/src/Mod/TechDraw/Gui/ViewProviderRichAnno.cpp
@@ -189,8 +189,8 @@ double ViewProviderRichAnno::getDefFontSize()
 double ViewProviderRichAnno::getDefLineWeight(void)
 {
     double result = 0.0;
-    std::string lgName = Preferences::lineGroup();
-    auto lg = TechDraw::LineGroup::lineGroupFactory(lgName);
+    int lgNumber = Preferences::lineGroup();
+    auto lg = TechDraw::LineGroup::lineGroupFactory(lgNumber);
     result = lg->getWeight("Graphics");
     delete lg;
     return result;
diff --git a/src/Mod/TechDraw/Gui/ViewProviderViewPart.cpp b/src/Mod/TechDraw/Gui/ViewProviderViewPart.cpp
index b583a5b7fc..052f891d53 100644
--- a/src/Mod/TechDraw/Gui/ViewProviderViewPart.cpp
+++ b/src/Mod/TechDraw/Gui/ViewProviderViewPart.cpp
@@ -88,8 +88,8 @@ ViewProviderViewPart::ViewProviderViewPart()
     static const char *hgroup = "Highlight";
 
     //default line weights
-    std::string lgName = Preferences::lineGroup();
-    auto lg = TechDraw::LineGroup::lineGroupFactory(lgName);
+    int lgNumber = Preferences::lineGroup();
+    auto lg = TechDraw::LineGroup::lineGroupFactory(lgNumber);
 
     double weight = lg->getWeight("Thick");
     ADD_PROPERTY_TYPE(LineWidth,(weight),group,App::Prop_None,"The thickness of visible lines (line groups xx.2");