diff --git a/mopidy/backends/local/stored_playlists.py b/mopidy/backends/local/stored_playlists.py
index 9e5b72c6..9615461c 100644
--- a/mopidy/backends/local/stored_playlists.py
+++ b/mopidy/backends/local/stored_playlists.py
@@ -145,5 +145,5 @@ class LocalStoredPlaylistsProvider(base.BaseStoredPlaylistsProvider):
         """
         value = unicodedata.normalize('NFKD', value)
         value = value.encode('ascii', 'ignore').decode('ascii')
-        value = re.sub('[^\w\s-]', '', value).strip().lower()
-        return re.sub('[-\s]+', '-', value)
+        value = re.sub(r'[^\w\s-]', '', value).strip().lower()
+        return re.sub(r'[-\s]+', '-', value)