diff --git a/src/Jackett.Common/Indexers/CardigannIndexer.cs b/src/Jackett.Common/Indexers/CardigannIndexer.cs
index a7801aad0..900cf0268 100644
--- a/src/Jackett.Common/Indexers/CardigannIndexer.cs
+++ b/src/Jackett.Common/Indexers/CardigannIndexer.cs
@@ -363,6 +363,9 @@ namespace Jackett.Common.Indexers
 
         protected bool checkForError(WebClientStringResult loginResult, IList<errorBlock> errorBlocks)
         {
+            if(loginResult.Status == HttpStatusCode.Unauthorized) // e.g. used by YGGtorrent
+                throw new ExceptionWithConfigData("401 Unauthorized, check your credentials", configData);
+
             if (errorBlocks == null)
                 return true; // no error