diff --git a/libsrc/occ/occgenmesh.cpp b/libsrc/occ/occgenmesh.cpp
index 5bea6c6c..7ce79d8c 100644
--- a/libsrc/occ/occgenmesh.cpp
+++ b/libsrc/occ/occgenmesh.cpp
@@ -1295,8 +1295,8 @@ namespace netgen
 
       if (mparam.perfstepsstart <= MESHCONST_ANALYSE)
       {
-        // delete mesh;
-        // mesh = make_shared<Mesh>();
+         if(mesh.get() == nullptr)
+           mesh = make_shared<Mesh>();
          mesh->geomtype = Mesh::GEOM_OCC;
          
          OCCSetLocalMeshSize(geom,*mesh);