diff --git a/scripts/supportedsites.py b/scripts/supportedsites.py
index 08c61f0c..62db3e98 100755
--- a/scripts/supportedsites.py
+++ b/scripts/supportedsites.py
@@ -363,6 +363,8 @@ def build_extractor_list():
                             if extr.from_url(url).category == category:
                                 root = url[:url.index("/", 8)]
                                 break
+                        else:
+                            continue
                     domains[category] = root + "/"
 
     # sort subcategory lists