diff --git a/Demos/UserCollisionAlgorithm/UserCollisionAlgorithm.cpp b/Demos/UserCollisionAlgorithm/UserCollisionAlgorithm.cpp
index 6ef143e0f..3f7786db2 100644
--- a/Demos/UserCollisionAlgorithm/UserCollisionAlgorithm.cpp
+++ b/Demos/UserCollisionAlgorithm/UserCollisionAlgorithm.cpp
@@ -100,8 +100,7 @@ void	UserCollisionAlgorithm::initPhysics()
 	
 	delete[] gVertices;
 
-	bool useQuantizedBvhTree = false;
-//	btTriangleMesh uses a subpart for each triangle, this is not compatible with compressed quantized bvh node
+	bool useQuantizedBvhTree = true;
 	btCollisionShape* trimeshShape  = new btBvhTriangleMeshShape(trimesh,useQuantizedBvhTree);
 		
 	//ConstraintSolver* solver = new btSequentialImpulseConstraintSolver;