diff --git a/src/BulletCollision/NarrowPhaseCollision/btPersistentManifold.h b/src/BulletCollision/NarrowPhaseCollision/btPersistentManifold.h
index 3722d1afd..003737588 100644
--- a/src/BulletCollision/NarrowPhaseCollision/btPersistentManifold.h
+++ b/src/BulletCollision/NarrowPhaseCollision/btPersistentManifold.h
@@ -138,7 +138,7 @@ public:
 #define MAINTAIN_PERSISTENCY 1
 #ifdef MAINTAIN_PERSISTENCY
 		int	lifeTime = m_pointCache[insertIndex].getLifeTime();
-		btScalar	appliedImpulse = m_pointCache[insertIndex].m_appliedImpulse;
+		btScalar	appliedImpulse = 0.f;//m_pointCache[insertIndex].m_appliedImpulse;
 		btAssert(lifeTime>=0);
 		void* cache = m_pointCache[insertIndex].m_userPersistentData;