diff --git a/src/NzbDrone.Core/Indexers/Definitions/Anthelion.cs b/src/NzbDrone.Core/Indexers/Definitions/Anthelion.cs
index f1464f07a..bdffbbca5 100644
--- a/src/NzbDrone.Core/Indexers/Definitions/Anthelion.cs
+++ b/src/NzbDrone.Core/Indexers/Definitions/Anthelion.cs
@@ -19,6 +19,7 @@ using NzbDrone.Core.Parser.Model;
 
 namespace NzbDrone.Core.Indexers.Definitions
 {
+    [Obsolete("Moved to YML for Cardigann")]
     public class Anthelion : TorrentIndexerBase<UserPassTorrentBaseSettings>
     {
         public override string Name => "Anthelion";