diff --git a/src/config/defaults.js b/src/config/defaults.js
index e4c89c9a..1e3da1c0 100644
--- a/src/config/defaults.js
+++ b/src/config/defaults.js
@@ -1,8 +1,8 @@
-const defaults = {
+const defaults = Object.freeze({
   port: 8088,
   base_url: '/',
   ping_interval: 10000,
   static_path: null,
-};
+});
 
 export default defaults;
diff --git a/src/socketserver/index.js b/src/socketserver/index.js
index df2e88b4..d928b340 100644
--- a/src/socketserver/index.js
+++ b/src/socketserver/index.js
@@ -11,7 +11,7 @@ import attachEventHandlers from './handlers';
 import { getHealth } from './state';
 
 const socketServer = ({
-  baseUrl, staticPath, port, pingInterval,
+  base_url: baseUrl, static_path: staticPath, port, ping_interval: pingInterval,
 }) => {
   http.globalAgent.keepAlive = true;