diff --git a/ml5/qlearning.py b/ml5/qlearning.py
index 660c595..155ad5c 100644
--- a/ml5/qlearning.py
+++ b/ml5/qlearning.py
@@ -1,4 +1,4 @@
-# Class definition of QLearning
+# Class definition of QLearning 
 
 from pathlib import Path
 from typing import NamedTuple