diff --git a/DQN/Space Invaders/DQN Atari Space Invaders.ipynb b/DQN/Space Invaders/DQN Atari Space Invaders.ipynb
index 5eda36b..070d428 100644
--- a/DQN/Space Invaders/DQN Atari Space Invaders.ipynb	
+++ b/DQN/Space Invaders/DQN Atari Space Invaders.ipynb	
@@ -681,6 +681,7 @@
    "source": [
     "# Saver will help us to save our model\n",
     "saver = tf.train.Saver()\n",
+    "rewards_list=[]\n",
     "\n",
     "if training == True:\n",
     "    with tf.Session() as sess:\n",