diff --git a/src/Jackett.Common/Indexers/BaseIndexer.cs b/src/Jackett.Common/Indexers/BaseIndexer.cs
index 8a27f9fe6..04612f32f 100644
--- a/src/Jackett.Common/Indexers/BaseIndexer.cs
+++ b/src/Jackett.Common/Indexers/BaseIndexer.cs
@@ -226,6 +226,7 @@ namespace Jackett.Indexers
         {
             IsConfigured = false;
             SiteLink = DefaultSiteLink;
+            CookieHeader = ""; // clear cookies
         }
 
         public abstract Task<IndexerConfigurationStatus> ApplyConfiguration(JToken configJson);