diff --git a/src/Jackett.Common/Indexers/TorrentSyndikat.cs b/src/Jackett.Common/Indexers/TorrentSyndikat.cs
index 2afe9d242..6ca95edf1 100644
--- a/src/Jackett.Common/Indexers/TorrentSyndikat.cs
+++ b/src/Jackett.Common/Indexers/TorrentSyndikat.cs
@@ -168,7 +168,7 @@ namespace Jackett.Common.Indexers
 
             }
             foreach (var cat in MapTorznabCapsToTrackers(query))
-                queryCollection.Add("c" + cat, "1");
+                queryCollection.Add("cat[]",cat);
 
             var searchUrl = SearchUrl + "?" + queryCollection.GetQueryString();