diff --git a/models/index.js b/models/index.js
index ce20194..fd6cc00 100644
--- a/models/index.js
+++ b/models/index.js
@@ -3,22 +3,17 @@ const path = require("path");
 const Sequelize = require("sequelize");
 
 const basename = path.basename(__filename);
-const env = process.env.NODE_ENV || "development";
+const env = process.env.NODE_ENV;
 // eslint-disable-next-line import/no-dynamic-require
 const config = require(`${__dirname}/../config/config.json`)[env];
 const db = {};
 
-let sequelize;
-if (config.use_env_variable) {
-  sequelize = new Sequelize(process.env[config.use_env_variable], config);
-} else {
-  sequelize = new Sequelize(
-    config.database,
-    config.username,
-    config.password,
-    config
-  );
-}
+const sequelize = new Sequelize(
+  config.database,
+  config.username,
+  config.password,
+  config
+);
 
 fs.readdirSync(__dirname)
   .filter(file => {