diff --git a/src/NzbDrone.Core/Download/Clients/Deluge/DelugeSettings.cs b/src/NzbDrone.Core/Download/Clients/Deluge/DelugeSettings.cs
index 9b0010f67..b3d2d64d2 100644
--- a/src/NzbDrone.Core/Download/Clients/Deluge/DelugeSettings.cs
+++ b/src/NzbDrone.Core/Download/Clients/Deluge/DelugeSettings.cs
@@ -12,7 +12,7 @@ namespace NzbDrone.Core.Download.Clients.Deluge
             RuleFor(c => c.Host).ValidHost();
             RuleFor(c => c.Port).InclusiveBetween(1, 65535);
 
-            RuleFor(c => c.MovieCategory).Matches("^[-a-z]*$").WithMessage("Allowed characters a-z and -");
+            RuleFor(c => c.MovieCategory).Matches("^[-a-z0-9]*$").WithMessage("Allowed characters a-z, 0-9, and -");
         }
     }