diff --git a/src/Mod/Part/App/TopoShapePyImp.cpp b/src/Mod/Part/App/TopoShapePyImp.cpp
index 4536504820..7f25c33795 100644
--- a/src/Mod/Part/App/TopoShapePyImp.cpp
+++ b/src/Mod/Part/App/TopoShapePyImp.cpp
@@ -2366,7 +2366,7 @@ PyObject* TopoShapePy::findSubShapesWithSharedVertex(PyObject* args, PyObject* k
     double atol = 1e-12;
     if (!Base::Wrapped_ParseTupleAndKeywords(args,
                                              keywds,
-                                             "O!|OOdd",
+                                             "O!|OOddO",
                                              kwlist,
                                              &Type,
                                              &pyobj,