diff --git a/examples/pybullet/pybullet.c b/examples/pybullet/pybullet.c
index 275d93976..16d4ca70a 100644
--- a/examples/pybullet/pybullet.c
+++ b/examples/pybullet/pybullet.c
@@ -4560,7 +4560,7 @@ static PyObject* pybullet_enableJointForceTorqueSensor(PyObject* self, PyObject*
 	b3PhysicsClientHandle sm = 0;
 	int numJoints = -1;
 
-	static char* kwlist[] = {"bodyUniqueId", "jointIndex", "enableSensor", "physicsClientId"};
+	static char* kwlist[] = {"bodyUniqueId", "jointIndex", "enableSensor", "physicsClientId",NULL};
 
 	if (!PyArg_ParseTupleAndKeywords(args, keywds, "ii|ii", kwlist, &bodyUniqueId, &jointIndex, &enableSensor, &physicsClientId))
 	{