diff --git a/src/Mod/Part/App/TopoShape.cpp b/src/Mod/Part/App/TopoShape.cpp
index 76e46556ae..a714012221 100644
--- a/src/Mod/Part/App/TopoShape.cpp
+++ b/src/Mod/Part/App/TopoShape.cpp
@@ -592,6 +592,7 @@ PyObject * TopoShape::getPyObject()
         }
     }
 
+    prop->setNotTracking();
     return prop;
 }