diff --git a/apps/opencs/model/world/idtable.hpp b/apps/opencs/model/world/idtable.hpp
index 5500d40b8..de3adef7c 100644
--- a/apps/opencs/model/world/idtable.hpp
+++ b/apps/opencs/model/world/idtable.hpp
@@ -40,7 +40,6 @@ namespace CSMWorld
 
             CollectionBase *mIdCollection;
             unsigned int mFeatures;
-            bool mPreview;
 
             // not implemented
             IdTable (const IdTable&);