diff --git a/custom/proxy/config/error_pages/503.html b/custom/proxy/config/error_pages/50x.html
similarity index 100%
rename from custom/proxy/config/error_pages/503.html
rename to custom/proxy/config/error_pages/50x.html
diff --git a/custom/proxy/config/nginx.conf b/custom/proxy/config/nginx.conf
index 4f7f327..c972614 100644
--- a/custom/proxy/config/nginx.conf
+++ b/custom/proxy/config/nginx.conf
@@ -34,8 +34,8 @@ http {
         server_name _; # This is just an invalid value which will never trigger on a real hostname.
         listen 80;
         access_log /var/log/nginx/access.log vhost;
-        error_page 503 /503.html;
-        location = /503.html {
+        error_page 503 /50x.html;
+        location = /50x.html {
                 root /usr/share/nginx/html;
                 internal;
         }