diff --git a/libsrc/occ/occgeom.hpp b/libsrc/occ/occgeom.hpp
index a77cd7a4..372979ad 100644
--- a/libsrc/occ/occgeom.hpp
+++ b/libsrc/occ/occgeom.hpp
@@ -206,7 +206,7 @@ namespace netgen
     void Print (ostream & ost) const;
   };
 
-  class OCCGeometry : public NetgenGeometry
+  class DLL_HEADER OCCGeometry : public NetgenGeometry
   {
     Point<3> center;
     OCCParameters occparam;
@@ -276,7 +276,7 @@ namespace netgen
  
     void FinalizeMesh(Mesh& mesh) const override;
      
-    DLL_HEADER void Save (string filename) const override;
+    void Save (string filename) const override;
      
     void DoArchive(Archive& ar) override;
 
@@ -298,7 +298,7 @@ namespace netgen
                       const PointGeomInfo & gi2,
                       Point<3> & newp, PointGeomInfo & newgi) const override;
 
-    DLL_HEADER void BuildFMap();
+    void BuildFMap();
      
     Box<3> GetBoundingBox() const
     { return boundingbox; }
@@ -323,8 +323,8 @@ namespace netgen
       return OCCSurface (TopoDS::Face(fmap(surfi)), PLANESPACE);
     }
 
-    DLL_HEADER void CalcBoundingBox ();
-    DLL_HEADER void BuildVisualizationMesh (double deflection);
+    void CalcBoundingBox ();
+    void BuildVisualizationMesh (double deflection);
     
     void RecursiveTopologyTree (const TopoDS_Shape & sh,
                                 stringstream & str,
@@ -332,17 +332,17 @@ namespace netgen
                                 bool free,
                                 const char * lname);
 
-    DLL_HEADER void GetTopologyTree (stringstream & str);
+    void GetTopologyTree (stringstream & str);
 
-    DLL_HEADER void PrintNrShapes ();
+    void PrintNrShapes ();
 
-    DLL_HEADER void CheckIrregularEntities (stringstream & str);
+    void CheckIrregularEntities (stringstream & str);
 
-    DLL_HEADER void SewFaces();
+    void SewFaces();
 
-    DLL_HEADER void MakeSolid();
+    void MakeSolid();
 
-    DLL_HEADER void HealGeometry();
+    void HealGeometry();
 
     // Philippose - 15/01/2009
     // Sets the maximum mesh size for a given face
@@ -435,13 +435,12 @@ namespace netgen
         vvispar[i-1].Lowlight();
     }
 
-    DLL_HEADER void GetUnmeshedFaceInfo (stringstream & str);
-    DLL_HEADER void GetNotDrawableFaces (stringstream & str);
-    DLL_HEADER bool ErrorInSurfaceMeshing ();
+    void GetUnmeshedFaceInfo (stringstream & str);
+    void GetNotDrawableFaces (stringstream & str);
+    bool ErrorInSurfaceMeshing ();
 
     //      void WriteOCC_STL(char * filename);
 
-    // DLL_HEADER virtual int GenerateMesh (shared_ptr<Mesh> & mesh, MeshingParameters & mparam);
   private:
     bool FastProject (int surfi, Point<3> & ap, double& u, double& v) const;
   };