diff --git a/src/Mod/PartDesign/App/AppPartDesign.cpp b/src/Mod/PartDesign/App/AppPartDesign.cpp
index ace223d465..7a8efe1c98 100644
--- a/src/Mod/PartDesign/App/AppPartDesign.cpp
+++ b/src/Mod/PartDesign/App/AppPartDesign.cpp
@@ -58,7 +58,7 @@ PyDoc_STRVAR(module_PartDesign_doc,
 
 /* Python entry */
 extern "C" {
-void PartDesignExport initPartDesign()
+void PartDesignExport init_PartDesign()
 {
     // load dependent module
     try {
@@ -69,7 +69,7 @@ void PartDesignExport initPartDesign()
         PyErr_SetString(PyExc_ImportError, e.what());
         return;
     }
-    Py_InitModule3("PartDesign", PartDesign_methods, module_PartDesign_doc);   /* mod name, table ptr */
+    Py_InitModule3("_PartDesign", PartDesign_methods, module_PartDesign_doc);   /* mod name, table ptr */
     Base::Console().Log("Loading PartDesign module... done\n");
 
 
diff --git a/src/Mod/PartDesign/App/CMakeLists.txt b/src/Mod/PartDesign/App/CMakeLists.txt
index 544e971844..783fa3036a 100644
--- a/src/Mod/PartDesign/App/CMakeLists.txt
+++ b/src/Mod/PartDesign/App/CMakeLists.txt
@@ -128,7 +128,7 @@ fc_target_copy_resource(PartDesign
     ${CMAKE_BINARY_DIR}/Mod/PartDesign
     ${PartDesign_Scripts})
 
-SET_BIN_DIR(PartDesign PartDesign /Mod/PartDesign)
+SET_BIN_DIR(PartDesign _PartDesign /Mod/PartDesign)
 SET_PYTHON_PREFIX_SUFFIX(PartDesign)
 
 INSTALL(TARGETS PartDesign DESTINATION ${CMAKE_INSTALL_LIBDIR})
diff --git a/src/Mod/PartDesign/__init__.py b/src/Mod/PartDesign/__init__.py
index 6c19fb5af6..29a70ae509 100644
--- a/src/Mod/PartDesign/__init__.py
+++ b/src/Mod/PartDesign/__init__.py
@@ -1,2 +1,3 @@
-import Scripts.FilletArc
-makeFilletArc = Scripts.FilletArc.makeFilletArc
+import _PartDesign
+makeFilletArc = _PartDesign.makeFilletArc
+