diff --git a/scripts/upgrade b/scripts/upgrade
index 6811224..ac1ac3a 100644
--- a/scripts/upgrade
+++ b/scripts/upgrade
@@ -123,10 +123,6 @@ ynh_psql_execute_as_root --database="$db_name" --sql="UPDATE public.mdl_user SET
 
 php${phpversion} "$install_dir/admin/cli/purge_caches.php"
 
-chmod 750 "$install_dir"
-chmod -R o-rwx "$install_dir"
-chown -R $app:www-data "$install_dir"
-
 #=================================================
 # ADD CRON JOB
 #=================================================