diff --git a/scripts/install b/scripts/install
index cc149a4..8163e0a 100644
--- a/scripts/install
+++ b/scripts/install
@@ -28,7 +28,7 @@ domain=$YNH_APP_ARG_DOMAIN
 path_url=$YNH_APP_ARG_PATH
 admin=$YNH_APP_ARG_ADMIN
 is_public=$YNH_APP_ARG_IS_PUBLIC
-email=$(ynh_user_get_info --username=$admin --key=mail)
+email=$(ynh_user_get_info --username="$admin" --key=mail)
 
 app=$YNH_APP_INSTANCE_NAME