diff --git a/ReinforcementLearning/DeepQLearning/main_tf2_dueling_ddqn_lunar_lander.py b/ReinforcementLearning/DeepQLearning/main_tf2_dueling_ddqn_lunar_lander.py
index d99288a..eb3e2ad 100644
--- a/ReinforcementLearning/DeepQLearning/main_tf2_dueling_ddqn_lunar_lander.py
+++ b/ReinforcementLearning/DeepQLearning/main_tf2_dueling_ddqn_lunar_lander.py
@@ -22,12 +22,12 @@
             agent.store_transition(observation, action, reward, observation_, done)
             observation = observation_
             agent.learn()
-        eps_history.append(ddqn_agent.epsilon)
+        eps_history.append(agent.epsilon)
 
         ddqn_scores.append(score)
 
-        avg_score = np.mean(scores[-100:])
-        print('episode: ', i,'score: %.2f' % score,
+        avg_score = np.mean(ddqn_scores[-100:])
+        print('episode: ', i, 'score: %.2f' % score,
               ' average score %.2f' % avg_score)
 
     filename = 'lunarlander-dueling_ddqn.png'