diff --git a/src/BulletCollision/CollisionDispatch/btCollisionObject.cpp b/src/BulletCollision/CollisionDispatch/btCollisionObject.cpp
index ec17ecbbd..467a35364 100644
--- a/src/BulletCollision/CollisionDispatch/btCollisionObject.cpp
+++ b/src/BulletCollision/CollisionDispatch/btCollisionObject.cpp
@@ -26,7 +26,9 @@ btCollisionObject::btCollisionObject()
 		m_hitFraction(btScalar(1.)),
 		m_ccdSweptSphereRadius(btScalar(0.)),
 		m_ccdSquareMotionThreshold(btScalar(0.)),
-		m_checkCollideWith(false)
+		m_checkCollideWith(false),
+		m_islandTag1(-1),
+		m_companionId(-1)
 {
 	
 }
@@ -56,3 +58,4 @@ void btCollisionObject::activate(bool forceActivation)
 }
 
 
+