diff --git a/extern/recastnavigation/Detour/Include/DetourNavMesh.h b/extern/recastnavigation/Detour/Include/DetourNavMesh.h
index 0bf59ab069..caf77eb1b3 100644
--- a/extern/recastnavigation/Detour/Include/DetourNavMesh.h
+++ b/extern/recastnavigation/Detour/Include/DetourNavMesh.h
@@ -306,6 +306,10 @@ struct dtMeshTile
 	int dataSize;							///< Size of the tile data.
 	int flags;								///< Tile flags. (See: #dtTileFlags)
 	dtMeshTile* next;						///< The next free tile, or the next tile in the spatial grid.
+// OpenMW code - make dtMeshTile POD since R&D init it by memset
+//private:
+//	dtMeshTile(const dtMeshTile&);
+//	dtMeshTile& operator=(const dtMeshTile&);
 };
 
 /// Get flags for edge in detail triangle.