diff --git a/src/Mod/Fem/Gui/Resources/ui/ElementGeometry1D.ui b/src/Mod/Fem/Gui/Resources/ui/ElementGeometry1D.ui
index a3954f49dd..96a63b0010 100644
--- a/src/Mod/Fem/Gui/Resources/ui/ElementGeometry1D.ui
+++ b/src/Mod/Fem/Gui/Resources/ui/ElementGeometry1D.ui
@@ -240,7 +240,7 @@
             <item row="1" column="0">
              <widget class="QLabel" name="l_pipe_diameter">
               <property name="text">
-               <string>Diameter:   </string>
+               <string>Outer diameter:   </string>
               </property>
              </widget>
             </item>