diff --git a/conf/nginx.conf b/conf/nginx.conf
index ff0c108..b38c6d0 100644
--- a/conf/nginx.conf
+++ b/conf/nginx.conf
@@ -9,5 +9,5 @@ location ^~ __PATH__/ {
   proxy_redirect    off;
   proxy_set_header  Host $host;
   proxy_set_header  X-Real-IP $remote_addr;
-  add_header X-Frame-Options "ALLOW-FROM https://__NEXTCLOUDDOMAIN__";
+  add_header X-Frame-Options "ALLOW-FROM https://__NEXTCLOUDDOMAIN__" always;
 }
\ No newline at end of file