diff --git a/src/BulletDynamics/Dynamics/btDiscreteDynamicsWorld.cpp b/src/BulletDynamics/Dynamics/btDiscreteDynamicsWorld.cpp
index a88ed1caf..e53dde854 100644
--- a/src/BulletDynamics/Dynamics/btDiscreteDynamicsWorld.cpp
+++ b/src/BulletDynamics/Dynamics/btDiscreteDynamicsWorld.cpp
@@ -52,7 +52,7 @@ btDiscreteDynamicsWorld::btDiscreteDynamicsWorld(btDispatcher* dispatcher,btBroa
 :btDynamicsWorld(dispatcher,pairCache,collisionConfiguration),
 m_constraintSolver(constraintSolver),
 m_gravity(0,-10,0),
-m_localTime(btScalar(1.)/btScalar(60.)),
+m_localTime(0),
 m_synchronizeAllMotionStates(false),
 m_profileTimings(0)
 {
diff --git a/src/LinearMath/btIDebugDraw.h b/src/LinearMath/btIDebugDraw.h
index 1ca303182..e7849f648 100644
--- a/src/LinearMath/btIDebugDraw.h
+++ b/src/LinearMath/btIDebugDraw.h
@@ -59,7 +59,7 @@ class	btIDebugDraw
 		drawLine (from, to, fromColor);
 	}
 
-	void	drawSphere(btScalar radius, const btTransform& transform, const btVector3& color)
+	virtual void	drawSphere(btScalar radius, const btTransform& transform, const btVector3& color)
 	{
 		btVector3 start = transform.getOrigin();