diff --git a/src/Mod/Fem/App/PreCompiled.h b/src/Mod/Fem/App/PreCompiled.h
index 711fb820e6..459eee4814 100644
--- a/src/Mod/Fem/App/PreCompiled.h
+++ b/src/Mod/Fem/App/PreCompiled.h
@@ -126,36 +126,47 @@
 #endif
 
 // Opencascade
-#include <Standard_Real.hxx>
-#include <TopoDS_Face.hxx>
-#include <TopoDS_Solid.hxx>
-#include <TopoDS_Shape.hxx>
-#include <ShapeAnalysis_ShapeTolerance.hxx>
-#include <TopoDS.hxx>
-#include <BRepBuilderAPI_Copy.hxx>
-#include <BRepTools.hxx>
-#include <BRepAdaptor_Curve.hxx>
-#include <BRepAdaptor_Surface.hxx>
 #include <gp_Dir.hxx>
 #include <gp_Lin.hxx>
 #include <gp_Pln.hxx>
+#include <gp_Pnt.hxx>
 #include <gp_Vec.hxx>
+#include <Adaptor3d_IsoCurve.hxx>
+#include <Bnd_Box.hxx>
+#include <BRep_Tool.hxx>
+#include <BRepAdaptor_Curve.hxx>
+#include <BRepAdaptor_HSurface.hxx>
+#include <BRepAdaptor_Surface.hxx>
+#include <BRepBndLib.hxx>
+#include <BRepBuilderAPI_Copy.hxx>
+#include <BRepBuilderAPI_MakeVertex.hxx>
+#include <BRepClass_FaceClassifier.hxx>
+#include <BRepExtrema_DistShapeShape.hxx>
+#include <BRepGProp.hxx>
+#include <BRepGProp_Face.hxx>
+#include <BRepTools.hxx>
 #include <ElCLib.hxx>
 #include <ElSLib.hxx>
+#include <GCPnts_AbscissaPoint.hxx>
 #include <Geom_BezierCurve.hxx>
 #include <Geom_BezierSurface.hxx>
 #include <Geom_BSplineCurve.hxx>
 #include <Geom_BSplineSurface.hxx>
+#include <Geom_Line.hxx>
+#include <Geom_Plane.hxx>
+#include <GeomAPI_IntCS.hxx>
+#include <GeomAPI_ProjectPointOnSurf.hxx>
+#include <GProp_GProps.hxx>
 #include <Precision.hxx>
+#include <Standard_Real.hxx>
+#include <ShapeAnalysis_ShapeTolerance.hxx>
 #include <TColgp_Array2OfPnt.hxx>
+#include <TopoDS.hxx>
 #include <TopoDS_Edge.hxx>
-#include <Bnd_Box.hxx>
-#include <BRep_Tool.hxx>
-#include <BRepBndLib.hxx>
-#include <BRepExtrema_DistShapeShape.hxx>
+#include <TopoDS_Face.hxx>
+#include <TopoDS_Solid.hxx>
+#include <TopoDS_Shape.hxx>
 #include <TopoDS_Vertex.hxx>
-#include <BRepBuilderAPI_MakeVertex.hxx>
-#include <gp_Pnt.hxx>
 
 // VTK
 #include <vtkFieldData.h>
diff --git a/src/Mod/Fem/Gui/PreCompiled.h b/src/Mod/Fem/Gui/PreCompiled.h
index 0093373abc..672b193e67 100644
--- a/src/Mod/Fem/Gui/PreCompiled.h
+++ b/src/Mod/Fem/Gui/PreCompiled.h
@@ -71,6 +71,8 @@
 #include <boost/lexical_cast.hpp>
 
 #ifdef FC_OS_WIN32
+# define WIN32_LEAN_AND_MEAN
+# define NOMINMAX
 # include <windows.h>
 #endif