diff --git a/utils/datasets.py b/utils/datasets.py
index 0cdc72c..b6bb8b0 100644
--- a/utils/datasets.py
+++ b/utils/datasets.py
@@ -282,7 +282,7 @@ class LoadStreams:  # multiple IP or RTSP cameras
             # Start the thread to read frames from the video stream
             print(f'{i + 1}/{n}: {s}... ', end='')
             url = eval(s) if s.isnumeric() else s
-            if 'youtube.com/' in url or 'youtu.be/' in url:  # if source is YouTube video
+            if 'youtube.com/' in str(url) or 'youtu.be/' in str(url):  # if source is YouTube video
                 check_requirements(('pafy', 'youtube_dl'))
                 import pafy
                 url = pafy.new(url).getbest(preftype="mp4").url