diff --git a/src/Jackett/Indexers/BaseIndexer.cs b/src/Jackett/Indexers/BaseIndexer.cs
index b155e4ecf..1b0f4ab43 100644
--- a/src/Jackett/Indexers/BaseIndexer.cs
+++ b/src/Jackett/Indexers/BaseIndexer.cs
@@ -83,6 +83,11 @@ namespace Jackett.Indexers
 
         public Uri UncleanLink(Uri link)
         {
+            if (string.IsNullOrWhiteSpace(downloadUrlBase))
+            {
+                return link;
+            }
+
             if (link.ToString().StartsWith(downloadUrlBase))
             {
                 return link;