diff --git a/src/Mod/Part/App/TopoShapePyImp.cpp b/src/Mod/Part/App/TopoShapePyImp.cpp
index 6d43b94bad87..84921e03679c 100644
--- a/src/Mod/Part/App/TopoShapePyImp.cpp
+++ b/src/Mod/Part/App/TopoShapePyImp.cpp
@@ -165,7 +165,8 @@ PyObject* TopoShapePy::copy(PyObject *args)
         return 0;
     }
 
-    static_cast<TopoShapePy*>(cpy)->getTopoShapePtr()->_Shape = shape;
+    BRepBuilderAPI_Copy c(shape);
+    static_cast<TopoShapePy*>(cpy)->getTopoShapePtr()->_Shape = c.Shape();
     return cpy;
 }