diff --git a/apps/openmw/mwrender/mwscene.cpp b/apps/openmw/mwrender/mwscene.cpp
index 900b4d249d..cabed7beeb 100644
--- a/apps/openmw/mwrender/mwscene.cpp
+++ b/apps/openmw/mwrender/mwscene.cpp
@@ -18,6 +18,24 @@
 using namespace MWRender;
 using namespace Ogre;
 
+Debugging::Debugging(OEngine::Physic::PhysicEngine* engine){
+	eng = engine;
+}
+
+bool Debugging::toggleRenderMode (int mode){
+	 switch (mode)
+    {
+        case MWWorld::World::Render_CollisionDebug:
+
+            // TODO use a proper function instead of accessing the member variable
+            // directly.
+            eng->setDebugRenderingMode (!eng->isDebugCreated);
+            return eng->isDebugCreated;
+    }
+
+    return false;
+}
+
 MWScene::MWScene(OEngine::Render::OgreRenderer &_rend , OEngine::Physic::PhysicEngine* physEng)
     : rend(_rend)
 {
diff --git a/apps/openmw/mwrender/mwscene.hpp b/apps/openmw/mwrender/mwscene.hpp
index 9186790351..d68fb6ad57 100644
--- a/apps/openmw/mwrender/mwscene.hpp
+++ b/apps/openmw/mwrender/mwscene.hpp
@@ -28,6 +28,15 @@ namespace MWRender
 {
     class Player;
 
+	class Debugging{
+	OEngine::Physic::PhysicEngine* eng;
+
+
+	public:
+		Debugging(OEngine::Physic::PhysicEngine* engine);
+		bool toggleRenderMode (int mode);
+	};
+
     /// \brief 3D-scene (rendering and physics)
 
     class MWScene
diff --git a/apps/openmw/mwrender/renderingmanager.hpp b/apps/openmw/mwrender/renderingmanager.hpp
index ec03e970a0..8c76f8f26f 100644
--- a/apps/openmw/mwrender/renderingmanager.hpp
+++ b/apps/openmw/mwrender/renderingmanager.hpp
@@ -34,6 +34,8 @@ namespace MWWorld
 namespace MWRender
 {
 	class Player;
+	
+
 class RenderingManager {
 
 	 OEngine::Render::OgreRenderer &rend;