diff --git a/src/Mod/PartDesign/App/CMakeLists.txt b/src/Mod/PartDesign/App/CMakeLists.txt
index 5f62acef75..112a4ab12b 100644
--- a/src/Mod/PartDesign/App/CMakeLists.txt
+++ b/src/Mod/PartDesign/App/CMakeLists.txt
@@ -143,6 +143,11 @@ SET(PartDesign_SRCS
 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_PYTHON_PREFIX_SUFFIX(PartDesign)
diff --git a/src/Mod/PartDesign/App/PreCompiled.h b/src/Mod/PartDesign/App/PreCompiled.h
index 2d5ebfe8c3..1810f1474f 100644
--- a/src/Mod/PartDesign/App/PreCompiled.h
+++ b/src/Mod/PartDesign/App/PreCompiled.h
@@ -33,8 +33,8 @@
 # define MeshExport     __declspec(dllimport)
 #else // for Linux
 # define PartDesignExport
-# define PartExport 
-# define MeshExport   
+# define PartExport
+# define MeshExport
 #endif
 
 #ifdef _MSC_VER
@@ -60,6 +60,24 @@
 // OpenCasCade =====================================================================================
 #include <Mod/Part/App/OpenCascadeAll.h>
 
+// Apart from the Part OpenCascadeAll, I need:
+# include <GProp_GProps.hxx>
+# include <BRepGProp.hxx>
+# include <BRepProj_Projection.hxx>
+# include <BRepFeat_MakePrism.hxx>
+# include <BRepBuilderAPI_MakeSolid.hxx>
+# include <BRepBuilderAPI_Sewing.hxx>
+# include <BRepClass3d_SolidClassifier.hxx>
+# include <ShapeAnalysis_FreeBounds.hxx>
+# include <BRepOffsetAPI_ThruSections.hxx>
+# include <BRepAlgo.hxx>
+# include <ShapeFix_Shape.hxx>
+# include <ShapeFix_ShapeTolerance.hxx>
+# include <BRepFilletAPI_MakeChamfer.hxx>
+# include <BRepOffsetAPI_DraftAngle.hxx>
+# include <GeomAPI_IntSS.hxx>
+
+
 #include <Python.h>
 
 #endif // _PreComp_
diff --git a/src/Mod/Sketcher/App/CMakeLists.txt b/src/Mod/Sketcher/App/CMakeLists.txt
index 903b721820..54ab8d78e4 100644
--- a/src/Mod/Sketcher/App/CMakeLists.txt
+++ b/src/Mod/Sketcher/App/CMakeLists.txt
@@ -112,9 +112,23 @@ SET(Sketcher_SRCS
     ${Datatypes_SRCS}
 )
 
+SET(Sketcher_PCH_SRCS
+    ${Features_SRCS}
+    ${SketchModule_SRCS}
+    ${Python_SRCS}
+    ${Properties_SRCS}
+    ${Datatypes_SRCS}
+)
+
 add_library(Sketcher SHARED ${Sketcher_SRCS})
 target_link_libraries(Sketcher ${Sketcher_LIBS})
 
+if(FREECAD_USE_PCH)
+    add_definitions(-D_PreComp_)
+    GET_MSVC_PRECOMPILED_SOURCE("PreCompiled.cpp" Sketcher_CPP_SRCS ${Sketcher_PCH_SRCS})
+    ADD_MSVC_PRECOMPILED_HEADER(Sketcher PreCompiled.h PreCompiled.cpp Sketcher_CPP_SRCS)
+endif(FREECAD_USE_PCH)
+
 
 SET_BIN_DIR(Sketcher Sketcher /Mod/Sketcher)
 SET_PYTHON_PREFIX_SUFFIX(Sketcher)
diff --git a/src/Mod/Sketcher/App/PreCompiled.h b/src/Mod/Sketcher/App/PreCompiled.h
index 017e51666a..5b3a516681 100644
--- a/src/Mod/Sketcher/App/PreCompiled.h
+++ b/src/Mod/Sketcher/App/PreCompiled.h
@@ -53,6 +53,11 @@
 #include <bitset>
 
 #include <Mod/Part/App/OpenCascadeAll.h>
+// Other needed opencascade
+# include <ShapeFix_Wire.hxx>
+# include <BRepOffsetAPI_NormalProjection.hxx>
+# include <GeomConvert_BSplineCurveKnotSplitting.hxx>
+
 #include <Python.h>
 
 #elif defined(FC_OS_WIN32)