diff --git a/backend/controllers/user.controller.js b/backend/controllers/user.controller.js
index 28c352f..9a6f73e 100644
--- a/backend/controllers/user.controller.js
+++ b/backend/controllers/user.controller.js
@@ -37,7 +37,7 @@ exports.findOne = (req, res) => {
         })
         .catch(err => {
             res.status(500).send({
-                message: "Error retrieving user with id=" + id
+                message: `Error retrieving user with id=${id}: ${err.message}`
             });
         });
 };