diff --git a/libsrc/meshing/meshclass.hpp b/libsrc/meshing/meshclass.hpp
index 0d063963..00f53b77 100644
--- a/libsrc/meshing/meshclass.hpp
+++ b/libsrc/meshing/meshclass.hpp
@@ -384,7 +384,7 @@ namespace netgen
     DLL_HEADER int GetNDomains() const;
     ///
     int GetDimension() const { return dimension; }
-    void SetDimension (int dim); //  { dimension = dim; }
+    DLL_HEADER void SetDimension (int dim); //  { dimension = dim; }
 
     /// sets internal tables
     DLL_HEADER void CalcSurfacesOfNode ();
diff --git a/libsrc/meshing/meshtype.hpp b/libsrc/meshing/meshtype.hpp
index abe2440c..4ca6c596 100644
--- a/libsrc/meshing/meshtype.hpp
+++ b/libsrc/meshing/meshtype.hpp
@@ -1172,7 +1172,7 @@ namespace netgen
     void SetDomainIn (int di) { domin = di; }
     void SetDomainOut (int dom) { domout = dom; }
     void SetBCProperty (int bc) { bcprop = bc; }
-    void SetBCName (string * bcn); //  { bcname = bcn; }
+    DLL_HEADER void SetBCName (string * bcn); //  { bcname = bcn; }
     void SetBCName (const string & bcn) { bcname = bcn; }    
     // Philippose - 06/07/2009
     // Set the surface colour