diff --git a/books/src/config/index.js b/books/src/config/index.js
index 091d233..f06386c 100644
--- a/books/src/config/index.js
+++ b/books/src/config/index.js
@@ -1,8 +1,4 @@
-let DB_URI = "mongodb://localhost:27017/microservices";
-
-if (process.env.MONGO_DB_URI) {
-  DB_URI = process.env.MONGO_DB_URI;
-}
+let DB_URI = process.env.MONGO_DB_URI || "mongodb://localhost:27017/microservices";
 
 module.exports = {
   DB_URI