diff --git a/apps/opencs/model/world/pathgrid.hpp b/apps/opencs/model/world/pathgrid.hpp
index f13ad38c09..d8cc89f24f 100644
--- a/apps/opencs/model/world/pathgrid.hpp
+++ b/apps/opencs/model/world/pathgrid.hpp
@@ -9,9 +9,7 @@
 namespace CSMWorld
 {
     struct Cell;
-    template<typename T>
-    struct IdAccessor;
-    template<typename T, typename AT = IdAccessor<T> >
+    template<typename T, typename AT>
     class IdCollection;
 
     /// \brief Wrapper for Pathgrid record
diff --git a/apps/opencs/model/world/subcellcollection.hpp b/apps/opencs/model/world/subcellcollection.hpp
index 4ed4308ea7..74bb6c9551 100644
--- a/apps/opencs/model/world/subcellcollection.hpp
+++ b/apps/opencs/model/world/subcellcollection.hpp
@@ -9,9 +9,7 @@ namespace ESM
 namespace CSMWorld
 {
     struct Cell;
-    template<typename T>
-    struct IdAccessor;
-    template<typename T, typename AT = IdAccessor<T> >
+    template<typename T, typename AT>
     class IdCollection;
 
     /// \brief Single type collection of top level records that are associated with cells