diff --git a/src/Mod/Assembly/Gui/Command.cpp b/src/Mod/Assembly/Gui/Command.cpp
index dbdb6e47c9..954c217872 100644
--- a/src/Mod/Assembly/Gui/Command.cpp
+++ b/src/Mod/Assembly/Gui/Command.cpp
@@ -179,11 +179,11 @@ void CmdAssemblyAddExistingComponent::activated(int iMsg)
 
     // asking for file name (only step at the moment) 
     QStringList filter;
-    filter << QString::fromAscii("STEP (*.stp *.step)");
-    filter << QString::fromAscii("IGES (*.igs *.iges)");
-    filter << QString::fromAscii("BREP (*.brp *.brep)");
-    filter << QString::fromAscii("Mesh (*.stl *.obj)");
-    filter << QString::fromAscii("VRML (*.wrl)");
+    filter << QString::fromLatin1("STEP (*.stp *.step)");
+    filter << QString::fromLatin1("IGES (*.igs *.iges)");
+    filter << QString::fromLatin1("BREP (*.brp *.brep)");
+    filter << QString::fromLatin1("Mesh (*.stl *.obj)");
+    filter << QString::fromLatin1("VRML (*.wrl)");
 
     QString select;
     QString fn = Gui::FileDialog::getOpenFileName(Gui::getMainWindow(), QString(), QString(), filter.join(QLatin1String(";;")), &select);
@@ -237,11 +237,11 @@ void CmdAssemblyImport::activated(int iMsg)
 
     // asking for file name (only step at the moment) 
     QStringList filter;
-    filter << QString::fromAscii("STEP (*.stp *.step)");
-    filter << QString::fromAscii("IGES (*.igs *.iges)");
-    filter << QString::fromAscii("BREP (*.brp *.brep)");
-    filter << QString::fromAscii("Mesh (*.stl *.obj)");
-    filter << QString::fromAscii("VRML (*.wrl)");
+    filter << QString::fromLatin1("STEP (*.stp *.step)");
+    filter << QString::fromLatin1("IGES (*.igs *.iges)");
+    filter << QString::fromLatin1("BREP (*.brp *.brep)");
+    filter << QString::fromLatin1("Mesh (*.stl *.obj)");
+    filter << QString::fromLatin1("VRML (*.wrl)");
 
     QString select;
     QString fn = Gui::FileDialog::getOpenFileName(Gui::getMainWindow(), QString(), QString(), filter.join(QLatin1String(";;")), &select);
diff --git a/src/Mod/Assembly/Gui/TaskAssemblyConstraints.cpp b/src/Mod/Assembly/Gui/TaskAssemblyConstraints.cpp
index d826c611e5..2ede437e51 100644
--- a/src/Mod/Assembly/Gui/TaskAssemblyConstraints.cpp
+++ b/src/Mod/Assembly/Gui/TaskAssemblyConstraints.cpp
@@ -68,14 +68,14 @@ TaskAssemblyConstraints::TaskAssemblyConstraints(ViewProviderConstraint* vp)
 
     if(obj->First.getValue()) {
         QString str;
-        str = QString::fromAscii(obj->First.getValue()->getNameInDocument()) + QString::fromAscii(".") + QString::fromStdString(obj->First.getSubValues().front());
+        str = QString::fromLatin1(obj->First.getValue()->getNameInDocument()) + QString::fromLatin1(".") + QString::fromStdString(obj->First.getSubValues().front());
         ui->first_geom->setText(str);
         ass = dynamic_cast<Assembly::PartRef*>(obj->First.getValue())->getParentAssembly();
     };
 
     if(obj->Second.getValue()) {
         QString str;
-        str = QString::fromAscii(obj->Second.getValue()->getNameInDocument()) + QString::fromAscii(".") + QString::fromStdString(obj->Second.getSubValues().front());
+        str = QString::fromLatin1(obj->Second.getValue()->getNameInDocument()) + QString::fromLatin1(".") + QString::fromStdString(obj->Second.getSubValues().front());
         ui->second_geom->setText(str);
 
         if(!ass)
@@ -258,7 +258,7 @@ void TaskAssemblyConstraints::onSelectionChanged(const Gui::SelectionChanges& ms
     //        std::pair<Assembly::PartRef*, Assembly::Product*> part1 = static_cast<Assembly::Product*>(ActiveAsmObject)->getContainingPart(objs.back().getObject());
     //        con->First.setValue(part1.first, objs.back().getSubNames());
     //        QString str;
-    //        str = QString::fromAscii(part1.first->getNameInDocument()) + QString::fromAscii(".") + QString::fromStdString(con->First.getSubValues().front());
+    //        str = QString::fromLatin1(part1.first->getNameInDocument()) + QString::fromLatin1(".") + QString::fromStdString(con->First.getSubValues().front());
     //        ui->first_geom->setText(str);
 
     //        App::GetApplication().getActiveDocument()->recompute();
@@ -281,7 +281,7 @@ void TaskAssemblyConstraints::onSelectionChanged(const Gui::SelectionChanges& ms
     //        std::pair<Assembly::PartRef*, Assembly::Product*> part2 = static_cast<Assembly::Product*>(ActiveAsmObject)->getContainingPart(objs.back().getObject());
     //        con->Second.setValue(part2.first, objs.back().getSubNames());
     //        QString str;
-    //        str = QString::fromAscii(part2.first->getNameInDocument()) + QString::fromAscii(".") + QString::fromStdString(con->Second.getSubValues().front());
+    //        str = QString::fromLatin1(part2.first->getNameInDocument()) + QString::fromLatin1(".") + QString::fromStdString(con->Second.getSubValues().front());
     //        ui->second_geom->setText(str);
 
     //        App::GetApplication().getActiveDocument()->recompute();
diff --git a/src/Mod/Assembly/Gui/ViewProviderPartRef.cpp b/src/Mod/Assembly/Gui/ViewProviderPartRef.cpp
index 2379135384..381f6f6e77 100644
--- a/src/Mod/Assembly/Gui/ViewProviderPartRef.cpp
+++ b/src/Mod/Assembly/Gui/ViewProviderPartRef.cpp
@@ -170,21 +170,21 @@ void ViewProviderPartRef::drop(const std::vector<const App::DocumentObject*> &ob
         //    if (par) {
         //        // allow an object to be in one group only
         //        QString cmd;
-        //        cmd = QString::fromAscii("App.getDocument(\"%1\").getObject(\"%2\").removeObject("
+        //        cmd = QString::fromLatin1("App.getDocument(\"%1\").getObject(\"%2\").removeObject("
         //                          "App.getDocument(\"%1\").getObject(\"%3\"))")
-        //                          .arg(QString::fromAscii(doc->getName()))
-        //                          .arg(QString::fromAscii(par->getNameInDocument()))
-        //                          .arg(QString::fromAscii(obj->getNameInDocument()));
+        //                          .arg(QString::fromLatin1(doc->getName()))
+        //                          .arg(QString::fromLatin1(par->getNameInDocument()))
+        //                          .arg(QString::fromLatin1(obj->getNameInDocument()));
         //        Gui::Application::Instance->runPythonCode(cmd.toUtf8());
         //    }
 
         //    // build Python command for execution
         //    QString cmd;
-        //    cmd = QString::fromAscii("App.getDocument(\"%1\").getObject(\"%2\").addObject("
+        //    cmd = QString::fromLatin1("App.getDocument(\"%1\").getObject(\"%2\").addObject("
         //                      "App.getDocument(\"%1\").getObject(\"%3\"))")
-        //                      .arg(QString::fromAscii(doc->getName()))
-        //                      .arg(QString::fromAscii(grp->getNameInDocument()))
-        //                      .arg(QString::fromAscii(obj->getNameInDocument()));
+        //                      .arg(QString::fromLatin1(doc->getName()))
+        //                      .arg(QString::fromLatin1(grp->getNameInDocument()))
+        //                      .arg(QString::fromLatin1(obj->getNameInDocument()));
         //    
         //    Gui::Application::Instance->runPythonCode(cmd.toUtf8());
         //}