diff --git a/Engine/source/scene/scenePolyhedralSpace.h b/Engine/source/scene/scenePolyhedralSpace.h
index bafa998fb..154fd52e7 100644
--- a/Engine/source/scene/scenePolyhedralSpace.h
+++ b/Engine/source/scene/scenePolyhedralSpace.h
@@ -30,7 +30,7 @@
 #ifndef _SCENEPOLYHEDRALOBJECT_H_
 #include "scene/mixin/scenePolyhedralObject.h"
 #endif
-
+#include "scene/mixin/scenePolyhedralObject.impl.h"
 
 ///
 class ScenePolyhedralSpace : public ScenePolyhedralObject< SceneSpace >