diff --git a/apps/opencs/view/render/cellwater.hpp b/apps/opencs/view/render/cellwater.hpp
index 09830d95a..d2ed9b458 100644
--- a/apps/opencs/view/render/cellwater.hpp
+++ b/apps/opencs/view/render/cellwater.hpp
@@ -20,7 +20,7 @@ namespace osg
 
 namespace CSMWorld
 {
-    class Cell;
+    struct Cell;
     class CellCoordinates;
     class Data;
 }