diff --git a/samples/python2/squares.py b/samples/python2/squares.py
index 512ad617dd..cc33144deb 100755
--- a/samples/python2/squares.py
+++ b/samples/python2/squares.py
@@ -6,7 +6,7 @@ Simple "Square Detector" program.
 Loads several images sequentially and tries to find squares in each image.
 '''
 
-# Python 2/3 compatibility 
+# Python 2/3 compatibility
 import sys
 PY3 = sys.version_info[0] == 3