diff --git a/OpenSim/Region/Physics/BulletSPlugin/BSPhysObject.cs b/OpenSim/Region/Physics/BulletSPlugin/BSPhysObject.cs
index 309d004274..f047176e8d 100755
--- a/OpenSim/Region/Physics/BulletSPlugin/BSPhysObject.cs
+++ b/OpenSim/Region/Physics/BulletSPlugin/BSPhysObject.cs
@@ -97,6 +97,9 @@ public abstract class BSPhysObject : PhysicsActor
 
         CollisionCollection = new CollisionEventUpdate();
         CollisionsLastReported = CollisionCollection;
+        CollisionsLastTick = new CollisionEventUpdate();
+        CollisionsLastTickStep = -1;
+
         SubscribedEventsMs = 0;
         CollidingStep = 0;
         CollidingGroundStep = 0;