diff --git a/src/Mod/PartDesign/App/AppPartDesign.cpp b/src/Mod/PartDesign/App/AppPartDesign.cpp
index 87ed33c03b..3ced52cdb8 100644
--- a/src/Mod/PartDesign/App/AppPartDesign.cpp
+++ b/src/Mod/PartDesign/App/AppPartDesign.cpp
@@ -63,7 +63,7 @@ extern PyObject* initModule();
 }
 
 /* Python entry */
-PyMOD_INIT_FUNC(_PartDesign)
+PyMOD_INIT_FUNC(PartDesign)
 {
     // load dependent module
     try {
diff --git a/src/Mod/PartDesign/App/AppPartDesignPy.cpp b/src/Mod/PartDesign/App/AppPartDesignPy.cpp
index a9473d999e..68b1d059cc 100644
--- a/src/Mod/PartDesign/App/AppPartDesignPy.cpp
+++ b/src/Mod/PartDesign/App/AppPartDesignPy.cpp
@@ -32,7 +32,7 @@ namespace PartDesign {
 class Module : public Py::ExtensionModule<Module>
 {
 public:
-    Module() : Py::ExtensionModule<Module>("_PartDesign")
+    Module() : Py::ExtensionModule<Module>("PartDesign")
     {
         add_varargs_method("makeFilletArc",&Module::makeFilletArc,
             "makeFilletArc(...) -- Fillet arc."
diff --git a/src/Mod/PartDesign/App/CMakeLists.txt b/src/Mod/PartDesign/App/CMakeLists.txt
index d74a77c1d5..278a57e3c5 100644
--- a/src/Mod/PartDesign/App/CMakeLists.txt
+++ b/src/Mod/PartDesign/App/CMakeLists.txt
@@ -144,16 +144,16 @@ SET(PartDesign_SRCS
     ${Python_SRCS}
 )
 
+if(FREECAD_USE_PCH)
+    add_definitions(-D_PreComp_)
+    GET_MSVC_PRECOMPILED_SOURCE("PreCompiled.cpp" PCH_SRCS ${PartDesign_SRCS})
+    ADD_MSVC_PRECOMPILED_HEADER(PartDesign PreCompiled.h PreCompiled.cpp PCH_SRCS)
+endif(FREECAD_USE_PCH)
+
 add_library(PartDesign SHARED ${PartDesign_SRCS})
 target_link_libraries(PartDesign ${PartDesign_LIBS})
 
-if(FREECAD_USE_PCH)
-    add_definitions(-D_PreComp_)
-    GET_MSVC_PRECOMPILED_SOURCE("PreCompiled.cpp" PartDesign_CPP_SRCS ${PartDesign_SRCS})
-    ADD_MSVC_PRECOMPILED_HEADER(PartDesign PreCompiled.h PreCompiled.cpp PartDesign_CPP_SRCS)
-endif(FREECAD_USE_PCH)
-
-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/App/PreCompiled.cpp b/src/Mod/PartDesign/App/PreCompiled.cpp
index 7cd1cae80f..cde4369c5b 100644
--- a/src/Mod/PartDesign/App/PreCompiled.cpp
+++ b/src/Mod/PartDesign/App/PreCompiled.cpp
@@ -20,5 +20,4 @@
  *                                                                         *
  ***************************************************************************/
 
-
 #include "PreCompiled.h"
diff --git a/src/Mod/PartDesign/__init__.py b/src/Mod/PartDesign/__init__.py
index 29a70ae509..20855033ff 100644
--- a/src/Mod/PartDesign/__init__.py
+++ b/src/Mod/PartDesign/__init__.py
@@ -1,3 +1,3 @@
-import _PartDesign
-makeFilletArc = _PartDesign.makeFilletArc
-
+import PartDesign
+makeFilletArc = PartDesign.makeFilletArc
+