diff --git a/src/NzbDrone.Core/Indexers/Definitions/HDSpace.cs b/src/NzbDrone.Core/Indexers/Definitions/HDSpace.cs
index 486f69448..8b2933799 100644
--- a/src/NzbDrone.Core/Indexers/Definitions/HDSpace.cs
+++ b/src/NzbDrone.Core/Indexers/Definitions/HDSpace.cs
@@ -20,6 +20,7 @@ using NzbDrone.Core.Parser.Model;
 
 namespace NzbDrone.Core.Indexers.Definitions
 {
+    [Obsolete("Moved to YML for Cardigann")]
     public class HDSpace : TorrentIndexerBase<HDSpaceSettings>
     {
         public override string Name => "HD-Space";