diff --git a/src/NzbDrone.Core/Indexers/Definitions/AnimeBytes.cs b/src/NzbDrone.Core/Indexers/Definitions/AnimeBytes.cs
index 1d0a78e95..30f084922 100644
--- a/src/NzbDrone.Core/Indexers/Definitions/AnimeBytes.cs
+++ b/src/NzbDrone.Core/Indexers/Definitions/AnimeBytes.cs
@@ -652,7 +652,7 @@ namespace NzbDrone.Core.Indexers.Definitions
         {
             var advancedSeasonRegex = new Regex(@"\b(?:(?<season>\d+)(?:st|nd|rd|th) Season|Season (?<season>\d+))\b", RegexOptions.Compiled | RegexOptions.IgnoreCase);
             var seasonCharactersRegex = new Regex(@"(I{2,})$", RegexOptions.Compiled);
-            var seasonNumberRegex = new Regex(@"\b(?<!Part[- ._])(?<!\d+[/])(?:S)?(?<season>[2-9])$", RegexOptions.Compiled);
+            var seasonNumberRegex = new Regex(@"\b(?<!Part[- ._])(?<!\d[/])(?:S)?(?<season>[2-9])$", RegexOptions.Compiled);
 
             foreach (var title in titles)
             {