diff --git a/.eslintrc.json b/.eslintrc.json
index 5aa5c53..a820283 100644
--- a/.eslintrc.json
+++ b/.eslintrc.json
@@ -9,6 +9,6 @@
       }
     ],
     "no-console": "off",
-    "no-underscore-dangle": ["on", { "allow": ["_id"] }]
+    "no-underscore-dangle": ["warn", { "allow": ["_id"] }]
   }
 }
diff --git a/app.js b/app.js
index bfe0a08..6273ae6 100644
--- a/app.js
+++ b/app.js
@@ -44,7 +44,6 @@ app.use((req, res) => {
 });
 
 // handle errors
-
 app.use((err, req, res, next) => {
   if (err.name === 'ValidationError') {
     res.status(400);