diff --git a/lib/appenders/index.js b/lib/appenders/index.js
index b9100b1..483483f 100644
--- a/lib/appenders/index.js
+++ b/lib/appenders/index.js
@@ -99,6 +99,10 @@ const createAppender = (name, config) => {
 const setup = (config) => {
   appenders.clear();
   appendersLoading.clear();
+  if (!config) {
+    return;
+  }
+
   const usedAppenders = [];
   Object.values(config.categories).forEach(category => {
     usedAppenders.push(...category.appenders);
@@ -114,7 +118,7 @@ const setup = (config) => {
 };
 
 const init = () => {
-  setup({ appenders: { out: { type: 'stdout' } }, categories: { default: { appenders: ['out'], level: 'trace' } } });
+  setup();
 };
 init();