diff --git a/contrib/local-environment/nginx.conf b/contrib/local-environment/nginx.conf
index 42fc06e3..ffb5f8e2 100644
--- a/contrib/local-environment/nginx.conf
+++ b/contrib/local-environment/nginx.conf
@@ -20,7 +20,7 @@ server {
 
   # If the auth_request denies the request (401), redirect to the sign_in page
   # and include the final rd URL back to the user's original request.
-  error_page 401 = http://oauth2-proxy.oauth2-proxy.localhost/oauth2/sign_in?rd=$scheme://$host$request_uri;
+  error_page 401 =403 http://oauth2-proxy.oauth2-proxy.localhost/oauth2/sign_in?rd=$scheme://$host$request_uri;
 
   # Alternatively send the request to `start` to skip the provider button
   # error_page 401 = http://oauth2-proxy.oauth2-proxy.localhost/oauth2/start?rd=$scheme://$host$request_uri;
@@ -54,7 +54,7 @@ server {
 
     # If the auth_request denies the request (401), redirect to the sign_in page
     # and include the final rd URL back to the user's original request.
-    error_page 401 = http://oauth2-proxy.oauth2-proxy.localhost/oauth2/sign_in?rd=$scheme://$host$request_uri;
+    error_page 401 =403 http://oauth2-proxy.oauth2-proxy.localhost/oauth2/sign_in?rd=$scheme://$host$request_uri;
 
     # Alternatively send the request to `start` to skip the provider button
     # error_page 401 = http://oauth2-proxy.oauth2-proxy.localhost/oauth2/start?rd=$scheme://$host$request_uri;