diff --git a/samples/python/tutorial_code/video/background_subtraction/bg_sub.py b/samples/python/tutorial_code/video/background_subtraction/bg_sub.py
index 15330fc8b0..1bf3d2fdd8 100644
--- a/samples/python/tutorial_code/video/background_subtraction/bg_sub.py
+++ b/samples/python/tutorial_code/video/background_subtraction/bg_sub.py
@@ -18,7 +18,7 @@ else:
 
 ## [capture]
 capture = cv.VideoCapture(cv.samples.findFileOrKeep(args.input))
-if not capture.isOpened:
+if not capture.isOpened():
     print('Unable to open: ' + args.input)
     exit(0)
 ## [capture]