diff --git a/src/Mod/Part/App/PreCompiled.h b/src/Mod/Part/App/PreCompiled.h
index f96b1e6826bf..1a1cd24f6f20 100644
--- a/src/Mod/Part/App/PreCompiled.h
+++ b/src/Mod/Part/App/PreCompiled.h
@@ -84,11 +84,5 @@
 #include <Standard_Version.hxx>
 #endif
 
-#if defined(OCC_VERSION_MAJOR) && defined(OCC_VERSION_MINOR) && defined(OCC_VERSION_MAINTENANCE)
-#   define OCC_HEX_VERSION ((OCC_VERSION_MAJOR<<16)+(OCC_VERSION_MINOR<<8)+(OCC_VERSION_MAINTENANCE))
-#else
-#   define OCC_HEX_VERSION 0x050000 // use an old version
-#endif
-
 
 #endif
diff --git a/src/Mod/Part/App/PrimitiveFeature.cpp b/src/Mod/Part/App/PrimitiveFeature.cpp
index 1a3c0c7e3744..32ccbb38bf4c 100644
--- a/src/Mod/Part/App/PrimitiveFeature.cpp
+++ b/src/Mod/Part/App/PrimitiveFeature.cpp
@@ -282,7 +282,7 @@ App::DocumentObjectExecReturn *Plane::execute(void)
     case BRepBuilderAPI_ParametersOutOfRange:
         error = "parameters out of range";
         break;
-#if OCC_HEX_VERSION < 0x060500
+#if OCC_VERSION_HEX < 0x060500
     case BRepBuilderAPI_SurfaceNotC2:
         error = "surface not C2";
         break;
diff --git a/src/Mod/Part/App/TopoShape.cpp b/src/Mod/Part/App/TopoShape.cpp
index 35d737531986..eb234a1acdd7 100644
--- a/src/Mod/Part/App/TopoShape.cpp
+++ b/src/Mod/Part/App/TopoShape.cpp
@@ -183,7 +183,7 @@ const char* BRepBuilderAPI_FaceErrorText(BRepBuilderAPI_FaceError et)
         return "Curve projection failed";
     case BRepBuilderAPI_ParametersOutOfRange:
         return "Parameters out of range";
-#if OCC_HEX_VERSION < 0x060500
+#if OCC_VERSION_HEX < 0x060500
     case BRepBuilderAPI_SurfaceNotC2:
         return "Surface not C2-continous";
 #endif
@@ -620,16 +620,16 @@ void TopoShape::importBrep(const char *FileName)
         // read brep-file
         BRep_Builder aBuilder;
         TopoDS_Shape aShape;
-    #if OCC_HEX_VERSION >= 0x060300
+#if OCC_VERSION_HEX >= 0x060300
         Handle_Message_ProgressIndicator pi = new ProgressIndicator(100);
         pi->NewScope(100, "Reading BREP file...");
         pi->Show();
         QString fn = QString::fromUtf8(FileName);
         BRepTools::Read(aShape,(const char*)fn.toLocal8Bit(),aBuilder,pi);
         pi->EndScope();
-    #else
+#else
         BRepTools::Read(aShape,(const Standard_CString)FileName,aBuilder);
-    #endif
+#endif
         this->_Shape = aShape;
     }
     catch (Standard_Failure) {
@@ -644,7 +644,7 @@ void TopoShape::importBrep(std::istream& str)
         // read brep-file
         BRep_Builder aBuilder;
         TopoDS_Shape aShape;
-#if OCC_HEX_VERSION >= 0x060300
+#if OCC_VERSION_HEX >= 0x060300
         Handle_Message_ProgressIndicator pi = new ProgressIndicator(100);
         pi->NewScope(100, "Reading BREP file...");
         pi->Show();
diff --git a/src/Mod/Part/App/TopoShapeFacePyImp.cpp b/src/Mod/Part/App/TopoShapeFacePyImp.cpp
index 036598bae783..102c4f81eb41 100644
--- a/src/Mod/Part/App/TopoShapeFacePyImp.cpp
+++ b/src/Mod/Part/App/TopoShapeFacePyImp.cpp
@@ -215,7 +215,7 @@ int TopoShapeFacePy::PyInit(PyObject* args, PyObject* /*kwd*/)
                     case BRepBuilderAPI_ParametersOutOfRange:
                         Standard_Failure::Raise("Parameters out of range");
                         break;
-#if OCC_HEX_VERSION < 0x060500
+#if OCC_VERSION_HEX < 0x060500
                     case BRepBuilderAPI_SurfaceNotC2:
                         Standard_Failure::Raise("Surface not C2");
                         break;
diff --git a/src/Mod/Part/App/TopoShapeShellPyImp.cpp b/src/Mod/Part/App/TopoShapeShellPyImp.cpp
index 743d8e3b1806..ffe898ba5f4d 100644
--- a/src/Mod/Part/App/TopoShapeShellPyImp.cpp
+++ b/src/Mod/Part/App/TopoShapeShellPyImp.cpp
@@ -155,7 +155,7 @@ PyObject*  TopoShapeShellPy::getFreeEdges(PyObject *args)
         return NULL;
     ShapeAnalysis_Shell as;
     as.LoadShells(getTopoShapePtr()->_Shape);
-#if OCC_HEX_VERSION < 0x060500
+#if OCC_VERSION_HEX < 0x060500
     as.CheckOrientedShells(getTopoShapePtr()->_Shape, Standard_True);
 #else
     as.CheckOrientedShells(getTopoShapePtr()->_Shape, Standard_True, Standard_True);
@@ -170,7 +170,7 @@ PyObject*  TopoShapeShellPy::getBadEdges(PyObject *args)
         return NULL;
     ShapeAnalysis_Shell as;
     as.LoadShells(getTopoShapePtr()->_Shape);
-#if OCC_HEX_VERSION < 0x060500
+#if OCC_VERSION_HEX < 0x060500
     as.CheckOrientedShells(getTopoShapePtr()->_Shape, Standard_True);
 #else
     as.CheckOrientedShells(getTopoShapePtr()->_Shape, Standard_True, Standard_True);