diff --git a/src/Mod/TechDraw/Gui/DlgPrefsTechDrawDimensions.ui b/src/Mod/TechDraw/Gui/DlgPrefsTechDrawDimensions.ui
index a1819701b6..4062ec758b 100644
--- a/src/Mod/TechDraw/Gui/DlgPrefsTechDrawDimensions.ui
+++ b/src/Mod/TechDraw/Gui/DlgPrefsTechDrawDimensions.ui
@@ -483,7 +483,7 @@ Multiplier of 'Font Size'</string>
            </font>
           </property>
           <property name="toolTip">
-           <string>Controls the size of gap between dimension point and start of extension line for ISO dimensions.</string>
+           <string>Controls the size of the gap between the dimension point and the start of the extension line for ISO dimensions.</string>
           </property>
           <property name="text">
            <string>Extension Gap Factor - ISO</string>
@@ -514,7 +514,7 @@ Multiplier of 'Font Size'</string>
            </font>
           </property>
           <property name="toolTip">
-           <string>Controls the size of gap between dimension point and start of extension line for ASME dimensions.</string>
+           <string>Controls the size of the gap between the dimension point and the start of the extension line for ASME dimensions.</string>
           </property>
           <property name="text">
            <string>Extension Gap Factor - ASME</string>
@@ -524,9 +524,9 @@ Multiplier of 'Font Size'</string>
         <item row="9" column="2">
          <widget class="Gui::PrefDoubleSpinBox" name="pdsbGapISO">
           <property name="toolTip">
-           <string>Controls the size of gap between dimension point and start of extension line for ISO dimensions.
+           <string>Controls the size of the gap between the dimension point and the start of the extension line for ISO dimensions.
  Value * linewidth is the gap.
- Normally, no gap is used. If using a gap, the recommended value 8.</string>
+ Normally, no gap is used. If using a gap, the recommended value is 8.</string>
           </property>
           <property name="alignment">
            <set>Qt::AlignRight|Qt::AlignTrailing|Qt::AlignVCenter</set>
@@ -545,8 +545,8 @@ Multiplier of 'Font Size'</string>
         <item row="10" column="2">
          <widget class="Gui::PrefDoubleSpinBox" name="pdsbGapASME">
           <property name="toolTip">
-           <string>Controls the size of gap between dimension point and start of extension line for ASME dimensions. Value * linewidth is the gap.
- Normally, no gap is used. If a gap is used, the recommended value is 6.</string>
+           <string>Controls the size of the gap between the dimension point and the start of the extension line for ASME dimensions. Value * linewidth is the gap.
+ Normally, no gap is used. If using a gap, the recommended value is 6.</string>
           </property>
           <property name="alignment">
            <set>Qt::AlignRight|Qt::AlignTrailing|Qt::AlignVCenter</set>