diff --git a/src/js/renderer.js b/src/js/renderer.js
index b955ed1f..092a9204 100644
--- a/src/js/renderer.js
+++ b/src/js/renderer.js
@@ -36,7 +36,7 @@ const createRemoveButton = () =>
   )
 
 export default class FormeoRenderer {
-  constructor(opts, formData) {
+  constructor(opts, formData = {}) {
     const { renderContainer, external } = processOptions(opts)
     this.container = renderContainer
     this.form = formData