diff --git a/src/alert/alertmanager/build/supervisord.conf b/src/alert/alertmanager/build/supervisord.conf
index d284547..da05ac7 100644
--- a/src/alert/alertmanager/build/supervisord.conf
+++ b/src/alert/alertmanager/build/supervisord.conf
@@ -6,7 +6,7 @@ user=root
 
 [program:alertmanager]
 command=/usr/local/bin/start-am-supervised.sh
-user=alertmanager
+user=ubuntu
 stdout_logfile=/var/log/supervisor/alertmanager.log
 stderr_logfile=/var/log/supervisor/alertmanager_error.log
 autorestart=true
diff --git a/src/web/build_tools/proxy/conf.d/ports.conf b/src/web/build_tools/proxy/conf.d/ports.conf
index c592518..7ed3418 100644
--- a/src/web/build_tools/proxy/conf.d/ports.conf
+++ b/src/web/build_tools/proxy/conf.d/ports.conf
@@ -69,6 +69,7 @@ server {
   proxy_set_header X-Real-IP $remote_addr;
   proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
   proxy_set_header X-Forwarded-Proto $scheme;
+  proxy_hide_header Access-Control-Allow-Origin;
   add_header 'Access-Control-Allow-Origin' $cors_allow always;
   add_header 'Access-Control-Allow-Methods' 'GET, POST, PUT, DELETE, OPTIONS' always;
   add_header 'Access-Control-Allow-Headers' 'Origin, Content-Type, Accept, Authorization' always;