diff --git a/src/Mod/Sketcher/App/SketchGeometryExtensionPy.xml b/src/Mod/Sketcher/App/SketchGeometryExtensionPy.xml
index b48bc17237..6e3d42cc1d 100644
--- a/src/Mod/Sketcher/App/SketchGeometryExtensionPy.xml
+++ b/src/Mod/Sketcher/App/SketchGeometryExtensionPy.xml
@@ -49,5 +49,11 @@
         </Documentation>
         <Parameter Name="Blocked" Type="Boolean"/>
     </Attribute>
+    <Attribute Name="Construction" ReadOnly="false">
+      <Documentation>
+        <UserDocu>Sets/retuns this geometry as a construction one, which will not be part of a later built shape.</UserDocu>
+      </Documentation>
+      <Parameter Name="Construction" Type="Boolean"/>
+    </Attribute>
   </PythonExport>
 </GenerateModel>