diff --git a/conf/nginx.conf b/conf/nginx.conf
index 6603e55..d1d550c 100644
--- a/conf/nginx.conf
+++ b/conf/nginx.conf
@@ -26,15 +26,15 @@ location __PATH__/ {
   location /assets/ {
     alias __FINAL_PATH__/web/assets/;
     autoindex off;
-    expires 5m;
-    add_header Cache-Control "public";
+    # 300 = 5 minutes
+    more_set_headers "Cache-control: public, max-age=300";
   }
 
   location /fileserver/ {
     alias /home/yunohost.app/__APP__/;
     autoindex off;
-    expires 1w;
-    add_header Cache-Control "private, immutable";
+    # 604800 = 1 week
+    more_set_headers "Cache-Control: private, immutable, max-age=604800";
     try_files $uri @fileserver;
   }