diff --git a/samples/python/houghlines.py b/samples/python/houghlines.py
index 76e074cb1b..efe29405ee 100755
--- a/samples/python/houghlines.py
+++ b/samples/python/houghlines.py
@@ -48,7 +48,7 @@ if __name__ == '__main__':
                 pt2 = ( int(x0-1000*(-b)), int(y0-1000*(a)) )
                 cv2.line(cdst, pt1, pt2, (0, 0, 255), 3, cv2.LINE_AA)
 
-            cv2.imshow("detected lines", cdst)
+    cv2.imshow("detected lines", cdst)
 
     cv2.imshow("source", src)
     cv2.waitKey(0)