diff --git a/recipe_modules/bot_update/resources/bot_update.py b/recipe_modules/bot_update/resources/bot_update.py
index 897642f438..0da6093c54 100755
--- a/recipe_modules/bot_update/resources/bot_update.py
+++ b/recipe_modules/bot_update/resources/bot_update.py
@@ -1127,7 +1127,7 @@ def apply_rietveld_issue(issue, patchset, root, server, _rev_map, _revision,
       cmd.extend(['--blacklist', item])
 
   # TODO(kjellander): Remove this hack when http://crbug.com/611808 is fixed.
-  if root == 'src/third_party/webrtc':
+  if root == path.join('src', 'third_party', 'webrtc'):
     cmd.extend(['--extra_patchlevel=1'])
 
   # Only try once, since subsequent failures hide the real failure.