diff --git a/install/ubuntu/15.04/templates/web/nginx/caching.sh b/install/ubuntu/15.04/templates/web/nginx/caching.sh
index 6eb9126db..0d535ef99 100755
--- a/install/ubuntu/15.04/templates/web/nginx/caching.sh
+++ b/install/ubuntu/15.04/templates/web/nginx/caching.sh
@@ -10,3 +10,4 @@ str="proxy_cache_path /var/cache/nginx/$domain levels=2"
 str="$str keys_zone=$domain:10m inactive=60m max_size=512m;"
 echo "$str" >> /etc/nginx/conf.d/01_caching_pool.conf
 
+sort -u /etc/nginx/conf.d/01_caching_pool.conf -o /etc/nginx/conf.d/01_caching_pool.conf