diff --git a/lib/tadoApi.js b/lib/tadoApi.js
index 0e11437d..0999bf56 100644
--- a/lib/tadoApi.js
+++ b/lib/tadoApi.js
@@ -44,7 +44,7 @@ class TadoApi {
      * @param {any} payload
      * @param {string} caller
      */
-    async apiCall(url, method = 'get', payload = null, caller = '') {
+    async apiCall(url, method = 'get', payload = {}, caller = '') {
         const stack = new Error().stack;
         if (stack && !caller) {
             let stackParts = stack.split(' at ');