diff --git a/libsrc/occ/occgeom.hpp b/libsrc/occ/occgeom.hpp
index 9e79c2a1..ca74b5b0 100644
--- a/libsrc/occ/occgeom.hpp
+++ b/libsrc/occ/occgeom.hpp
@@ -441,8 +441,7 @@ namespace netgen
    // External access to the mesh generation functions within the OCC
    // subsystem (Not sure if this is the best way to implement this....!!)
    extern int OCCGenerateMesh (OCCGeometry & occgeometry, shared_ptr<Mesh> & mesh,
-			       MeshingParameters & mparam,
-			       int perfstepsstart, int perfstepsend);
+			       MeshingParameters & mparam);
 
   extern void OCCSetLocalMeshSize(OCCGeometry & geom, Mesh & mesh);