diff --git a/src/Gui/WidgetFactory.cpp b/src/Gui/WidgetFactory.cpp
index 56eaa9b75..a82ab2eaf 100644
--- a/src/Gui/WidgetFactory.cpp
+++ b/src/Gui/WidgetFactory.cpp
@@ -142,6 +142,7 @@ bool PythonWrapper::toCString(const Py::Object& pyobject, std::string& str)
     }
     else if (PyString_Check(pyobject.ptr())) {
         str = PyString_AsString(pyobject.ptr());
+        return true;
     }
 #if defined (HAVE_SHIBOKEN) && defined(HAVE_PYSIDE)
     if (Shiboken::String::check(pyobject.ptr())) {