diff --git a/lib/db.js b/lib/db.js
index e0f873e..c62be7a 100644
--- a/lib/db.js
+++ b/lib/db.js
@@ -85,7 +85,7 @@ function readFromDB(id, callback) {
             } else {
                 //logger.info(result.rows);
                 if (result.rows.length <= 0) {
-                    callback("not found note in db: " + id, null);
+                    callback("not found note in db: " + JSON.stringify(id), null);
                 } else {
                     if(config.debug)
                         logger.info("read from db success");