diff --git a/config/config.extensions.js b/config/config.extensions.js
index df926579f..4252164ad 100644
--- a/config/config.extensions.js
+++ b/config/config.extensions.js
@@ -1,5 +1,7 @@
+const merge = require('lodash.merge');
 
 module.exports = config => {
+    config = merge({}, config);
     config.extensions = {};
     config.extensions.InteractiveComputeHost = process.env.DEEPFORGE_INTERACTIVE_COMPUTE_HOST;
     return config;