diff --git a/Source/Engine/Physics/PhysX/SimulationEventCallbackPhysX.cpp b/Source/Engine/Physics/PhysX/SimulationEventCallbackPhysX.cpp
index 7c9355099..684aeca19 100644
--- a/Source/Engine/Physics/PhysX/SimulationEventCallbackPhysX.cpp
+++ b/Source/Engine/Physics/PhysX/SimulationEventCallbackPhysX.cpp
@@ -132,7 +132,8 @@ void SimulationEventCallback::onContact(const PxContactPairHeader& pairHeader, c
 
         const PxReal* impulses = pair.contactImpulses;
         //const PxU32 flippedContacts = (pair.flags & PxContactPairFlag::eINTERNAL_CONTACTS_ARE_FLIPPED);
-        const PxU32 hasImpulses = (pair.flags & PxContactPairFlag::eINTERNAL_HAS_IMPULSES);
+        const bool hasImpulses = pair.flags.isSet(PxContactPairFlag::eINTERNAL_HAS_IMPULSES);
+        const bool hasPostVelocities = !pair.flags.isSet(PxContactPairFlag::eACTOR_PAIR_LOST_TOUCH);
         PxU32 nbContacts = 0;
         PxVec3 totalImpulse(0.0f);
 
@@ -166,7 +167,8 @@ void SimulationEventCallback::onContact(const PxContactPairHeader& pairHeader, c
         }
 
         // Extract velocities
-        if (j.nextItemSet())
+        c.ThisVelocity = c.OtherVelocity = Vector3::Zero;
+        if (hasPostVelocities && j.nextItemSet())
         {
             ASSERT(j.contactPairIndex == pairIndex);
             if (j.postSolverVelocity)
@@ -177,10 +179,6 @@ void SimulationEventCallback::onContact(const PxContactPairHeader& pairHeader, c
                 c.ThisVelocity = P2C(linearVelocityActor0);
                 c.OtherVelocity = P2C(linearVelocityActor1);
             }
-            else
-            {
-                c.ThisVelocity = c.OtherVelocity = Vector3::Zero;
-            }
         }
 
         c.ContactsCount = nbContacts;
@@ -195,6 +193,7 @@ void SimulationEventCallback::onContact(const PxContactPairHeader& pairHeader, c
             RemovedCollisions.Add(c);
         }
     }
+    ASSERT(!j.nextItemSet());
 }
 
 void SimulationEventCallback::onTrigger(PxTriggerPair* pairs, PxU32 count)