diff --git a/source/de/anomic/htmlFilter/htmlFilterContentScraper.java b/source/de/anomic/htmlFilter/htmlFilterContentScraper.java
index 78a38753c..193dee4be 100644
--- a/source/de/anomic/htmlFilter/htmlFilterContentScraper.java
+++ b/source/de/anomic/htmlFilter/htmlFilterContentScraper.java
@@ -183,7 +183,7 @@ public class htmlFilterContentScraper extends htmlFilterAbstractScraper implemen
         }
 
         if (defaultPort) return url.getProtocol() + "://" + url.getHost() + path;
-        return url.getProtocol() + "://" + url.getHost() + ":" + url.getPort() + path;
+        return url.getProtocol() + "://" + url.getHost().toLowerCase() + ":" + url.getPort() + path;
     }
 
     public static String urlNormalform(URL baseURL, String us) {