diff --git a/examples/pybullet/gym/pybullet_envs/gym_locomotion_envs.py b/examples/pybullet/gym/pybullet_envs/gym_locomotion_envs.py
index 68b355a13..93cd8af33 100644
--- a/examples/pybullet/gym/pybullet_envs/gym_locomotion_envs.py
+++ b/examples/pybullet/gym/pybullet_envs/gym_locomotion_envs.py
@@ -64,7 +64,7 @@ class WalkerBaseBulletEnv(MJCFBaseBulletEnv):
 		state = self.robot.calc_state()  # also calculates self.joints_at_limit
 
 		self._alive = float(self.robot.alive_bonus(state[0]+self.robot.initial_z, self.robot.body_rpy[1]))   # state[0] is body height above ground, body_rpy[1] is pitch
-		done = self._isAlive()
+		done = self._isDone()
 		if not np.isfinite(state).all():
 			print("~INF~", state)
 			done = True