diff --git a/server/app/app.py b/server/app/app.py
index 80aefc7f..28e03c76 100644
--- a/server/app/app.py
+++ b/server/app/app.py
@@ -36,7 +36,7 @@ def _cache_control(always, **cache_kwargs):
             if not always and not current_app.app_config.server__generate_cache_control_headers:
                 return response
             if response.status_code >= 400:
-                return response
+             return response
             for k, v in cache_kwargs.items():
                 setattr(response.cache_control, k, v)
             return response