diff --git a/swarmlab-app/nginx/swarmlab-stats-proxy-server.conf b/swarmlab-app/nginx/swarmlab-stats-proxy-server.conf
index 09ac9e0..b45a487 100644
--- a/swarmlab-app/nginx/swarmlab-stats-proxy-server.conf
+++ b/swarmlab-app/nginx/swarmlab-stats-proxy-server.conf
@@ -1,5 +1,5 @@
 upstream factory_servers {
-    master:3000;
+    server master:3000;
 }
 proxy_cache_path /var/tmp levels=1:2 keys_zone=my_cache:10m max_size=10g inactive=60m use_temp_path=off;
 server {