diff --git a/scripts/install b/scripts/install
index 63381d08..0d789cd6 100644
--- a/scripts/install
+++ b/scripts/install
@@ -23,7 +23,7 @@ ynh_abort_if_errors
 domain=$YNH_APP_ARG_DOMAIN
 path_url="/"
 is_public=$YNH_APP_ARG_IS_PUBLIC
-app_key=$(ynh_string_random --length=32)
+app_key=$(ynh_string_random 32)
 
 app=$YNH_APP_INSTANCE_NAME