diff --git a/scripts/backup b/scripts/backup
index 67278fd..059aa77 100755
--- a/scripts/backup
+++ b/scripts/backup
@@ -46,6 +46,7 @@ ynh_backup --src_path="$final_path"
 # BACKUP THE DATA DIR
 #=================================================
 
+ynh_print_info --message="WARNING : by default, the buckets are not saved (use is big option)..."
 ynh_backup --src_path="$datadir" --is_big
 
 #=================================================