diff --git a/source/gameengine/Ketsji/KX_BulletPhysicsController.cpp b/source/gameengine/Ketsji/KX_BulletPhysicsController.cpp
index dba11efef72..e25deaf05a9 100644
--- a/source/gameengine/Ketsji/KX_BulletPhysicsController.cpp
+++ b/source/gameengine/Ketsji/KX_BulletPhysicsController.cpp
@@ -13,6 +13,7 @@
 #include "KX_ClientObjectInfo.h"
 
 #include "PHY_IPhysicsEnvironment.h"
+#include "CcdPhysicsEnvironment.h"
 
 
 KX_BulletPhysicsController::KX_BulletPhysicsController (const CcdConstructionInfo& ci, bool dyna)
@@ -167,10 +168,15 @@ void	KX_BulletPhysicsController::SuspendDynamics(bool ghost)
 	btRigidBody *body = GetRigidBody();
 	if (body->getActivationState() != DISABLE_SIMULATION)
 	{
+		btBroadphaseProxy* handle = body->getBroadphaseHandle();
 		m_savedCollisionFlags = body->getCollisionFlags();
+		m_savedCollisionFilterGroup = handle->m_collisionFilterGroup;
+		m_savedCollisionFilterMask = handle->m_collisionFilterMask;
 		body->setActivationState(DISABLE_SIMULATION);
-		body->setCollisionFlags((btCollisionObject::CF_STATIC_OBJECT)|
-			((ghost)?btCollisionObject::CF_NO_CONTACT_RESPONSE:0));
+		GetPhysicsEnvironment()->updateCcdPhysicsController(this, 
+			btCollisionObject::CF_STATIC_OBJECT|((ghost)?btCollisionObject::CF_NO_CONTACT_RESPONSE:(m_savedCollisionFlags&btCollisionObject::CF_NO_CONTACT_RESPONSE)),
+			btBroadphaseProxy::StaticFilter, 
+			btBroadphaseProxy::AllFilter ^ btBroadphaseProxy::StaticFilter);
 	}
 }
 
@@ -180,7 +186,10 @@ void	KX_BulletPhysicsController::RestoreDynamics()
 	if (body->getActivationState() == DISABLE_SIMULATION)
 	{
 		GetRigidBody()->forceActivationState(ACTIVE_TAG);
-		body->setCollisionFlags(m_savedCollisionFlags);
+		GetPhysicsEnvironment()->updateCcdPhysicsController(this, 
+			m_savedCollisionFlags,
+			m_savedCollisionFilterGroup,
+			m_savedCollisionFilterMask);
 	}
 }
 
diff --git a/source/gameengine/Ketsji/KX_BulletPhysicsController.h b/source/gameengine/Ketsji/KX_BulletPhysicsController.h
index 6f048deb16b..3d7c7e5b030 100644
--- a/source/gameengine/Ketsji/KX_BulletPhysicsController.h
+++ b/source/gameengine/Ketsji/KX_BulletPhysicsController.h
@@ -9,6 +9,8 @@ class KX_BulletPhysicsController : public KX_IPhysicsController ,public CcdPhysi
 {
 private:
 	int m_savedCollisionFlags;
+	short int m_savedCollisionFilterGroup;
+	short int m_savedCollisionFilterMask;
 public:
 
 	KX_BulletPhysicsController (const CcdConstructionInfo& ci, bool dyna);
diff --git a/source/gameengine/Physics/Bullet/CcdPhysicsEnvironment.cpp b/source/gameengine/Physics/Bullet/CcdPhysicsEnvironment.cpp
index c9d346e316d..7f5457121ea 100644
--- a/source/gameengine/Physics/Bullet/CcdPhysicsEnvironment.cpp
+++ b/source/gameengine/Physics/Bullet/CcdPhysicsEnvironment.cpp
@@ -466,6 +466,16 @@ void	CcdPhysicsEnvironment::removeCcdPhysicsController(CcdPhysicsController* ctr
 
 }
 
+void	CcdPhysicsEnvironment::updateCcdPhysicsController(CcdPhysicsController* ctrl, int newCollisionFlags, short int newCollisionGroup, short int newCollisionMask)
+{
+	// this function is used when the collisionning group of a controller is changed
+	// remove and add the collistioning object
+	btRigidBody* body = ctrl->GetRigidBody();
+
+	m_dynamicsWorld->removeCollisionObject(body);
+	body->setCollisionFlags(newCollisionFlags);
+	m_dynamicsWorld->addCollisionObject(body, newCollisionGroup, newCollisionMask);
+}
 
 void	CcdPhysicsEnvironment::beginFrame()
 {
diff --git a/source/gameengine/Physics/Bullet/CcdPhysicsEnvironment.h b/source/gameengine/Physics/Bullet/CcdPhysicsEnvironment.h
index 9f14cf6cbef..dff17517b85 100644
--- a/source/gameengine/Physics/Bullet/CcdPhysicsEnvironment.h
+++ b/source/gameengine/Physics/Bullet/CcdPhysicsEnvironment.h
@@ -183,6 +183,8 @@ protected:
 
 		void	removeCcdPhysicsController(CcdPhysicsController* ctrl);
 
+		void	updateCcdPhysicsController(CcdPhysicsController* ctrl, int newCollisionFlags, short int newCollisionGroup, short int newCollisionMask);
+
 		btBroadphaseInterface*	getBroadphase();