diff --git a/src/NzbDrone.Core/Indexers/Definitions/BeyondHD.cs b/src/NzbDrone.Core/Indexers/Definitions/BeyondHD.cs
index 2f8327715..3873c746c 100644
--- a/src/NzbDrone.Core/Indexers/Definitions/BeyondHD.cs
+++ b/src/NzbDrone.Core/Indexers/Definitions/BeyondHD.cs
@@ -130,7 +130,7 @@ namespace NzbDrone.Core.Indexers.Definitions
 
             if (cats.Count > 0)
             {
-                body.Add("categories", string.Join(",", cats));
+                body.Add("categories", cats.Select(int.Parse).ToArray());
             }
 
             if (_settings.SearchTypes.Any())