diff --git a/app/javascript/sdk/IFrameHelper.js b/app/javascript/sdk/IFrameHelper.js
index 2166b4304..bb06640b2 100644
--- a/app/javascript/sdk/IFrameHelper.js
+++ b/app/javascript/sdk/IFrameHelper.js
@@ -88,7 +88,7 @@ export const IFrameHelper = {
   getBubbleHolder: () => document.getElementsByClassName('woot--bubble-holder'),
   sendMessage: (key, value) => {
     const element = IFrameHelper.getAppFrame();
-    element.contentWindow.postMessage(
+    element?.contentWindow.postMessage(
       `chatwoot-widget:${JSON.stringify({ event: key, ...value })}`,
       '*'
     );