--- a/libervia/server/server.py	Wed Sep 29 17:39:06 2021 +0200
+++ b/libervia/server/server.py	Wed Sep 29 17:39:08 2021 +0200
@@ -1717,23 +1717,23 @@
             )
         )
 
-    def checkRedirection(self, vhost_root, url):
+    def checkRedirection(self, vhost_root: LiberviaRootResource, url_path: str) -> str:
         """check is a part of the URL prefix is redirected then replace it
 
-        @param vhost_root(web_resource.Resource): root of this virtual host
-        @param url(unicode): url to check
-        @return (unicode): possibly redirected URL which should link to the same location
+        @param vhost_root: root of this virtual host
+        @param url_path: path of the url to check
+        @return: possibly redirected URL which should link to the same location
         """
         inv_redirections = vhost_root.inv_redirections
-        url_parts = url.strip("/").split("/")
-        for idx in range(len(url), 0, -1):
+        url_parts = url_path.strip("/").split("/")
+        for idx in range(len(url_parts), 0, -1):
             test_url = "/" + "/".join(url_parts[:idx])
             if test_url in inv_redirections:
                 rem_url = url_parts[idx:]
                 return os.path.join(
                     "/", "/".join([inv_redirections[test_url]] + rem_url)
                 )
-        return url
+        return url_path
 
     ## Sessions ##