diff --git a/modules/conop/src/conop.hh b/modules/conop/src/conop.hh
index e85bbc3008d6342216d99a0714f4e78154fa30d8..f8133a0781289326cc66a2d1021a68a9275f44ce 100644
--- a/modules/conop/src/conop.hh
+++ b/modules/conop/src/conop.hh
@@ -24,12 +24,7 @@
 #include <ost/mol/entity_handle.hh>
 #include "builder_fw.hh"
 
-namespace ost {
-
-// fw decl;
-class EntityHandle;
-
-namespace conop {
+namespace ost { namespace conop {
 
 class DLLEXPORT_OST_CONOP Conopology {
   typedef std::map<String,BuilderP> BuilderMap;