diff --git a/kallithea/config/app_cfg.py b/kallithea/config/app_cfg.py
--- a/kallithea/config/app_cfg.py
+++ b/kallithea/config/app_cfg.py
@@ -92,7 +92,7 @@ try:
 except ImportError:
     pass
 else:
-    base_config['renderers'].append('kajiki')
+    base_config.get_blueprint_value('renderers').append('kajiki')
     enable_debugbar(base_config)