diff --git a/experience_replay.py b/experience_replay.py
index 923cd97..d26b98d 100644
--- a/experience_replay.py
+++ b/experience_replay.py
@@ -100,7 +100,7 @@ def sample(self, batch_size):
                 self.rewards[idxs],
                 self.next_states[idxs],
                 self.dones[idxs],
-                self.priority[idxs]/sum(self.priority[idxs]),
+                self.priority[idxs]/sum(self.priority),
                 idxs
                 )