diff --git a/data/conf/nginx/site.conf b/data/conf/nginx/site.conf
index 1ee52f51..ed8473a3 100644
--- a/data/conf/nginx/site.conf
+++ b/data/conf/nginx/site.conf
@@ -57,7 +57,7 @@ server {
   }
 
   location ^~ /Microsoft-Server-ActiveSync {
-    proxy_pass http://sogo/SOGo/Microsoft-Server-ActiveSync;
+    proxy_pass http://sogo:20000/SOGo/Microsoft-Server-ActiveSync;
     proxy_connect_timeout 1000;
     proxy_next_upstream timeout error;
     proxy_send_timeout 1000;