diff --git a/kallithea/controllers/summary.py b/kallithea/controllers/summary.py
--- a/kallithea/controllers/summary.py
+++ b/kallithea/controllers/summary.py
@@ -119,10 +119,12 @@ class SummaryController(BaseRepoControll
             username = safe_str(request.authuser.username)
 
         _def_clone_uri = _def_clone_uri_by_id = c.clone_uri_tmpl
-        if '{repo}' in _def_clone_uri:
-            _def_clone_uri_by_id = _def_clone_uri.replace('{repo}', '_{repoid}')
-        elif '{repoid}' in _def_clone_uri:
-            _def_clone_uri_by_id = _def_clone_uri.replace('_{repoid}', '{repo}')
+        if '{repo}' in _def_clone_uri_by_id:
+            _def_clone_uri_by_id = _def_clone_uri_by_id.replace('{repo}', '_{repoid}')
+        elif '_{repoid}' in _def_clone_uri:
+            _def_clone_uri = _def_clone_uri.replace('_{repoid}', '{repo}')
+        else:
+            log.error("Configured clone_uri_tmpl %r has no '{repo}' or '_{repoid}' and cannot toggle to use repo id URLs", c.clone_uri_tmpl)
 
         c.clone_repo_url = c.db_repo.clone_url(user=username,
                                                 uri_tmpl=_def_clone_uri)