diff --git a/zundler/assets/inject_post.js b/zundler/assets/inject_post.js
index d6624f7..67e9317 100644
--- a/zundler/assets/inject_post.js
+++ b/zundler/assets/inject_post.js
@@ -82,7 +82,7 @@ monkeyPatch();
 
 // Set up message listener
 window.addEventListener("message", (evnt) => {
-    console.log("Received message in iframe", evnt);
+    console.log("Received message in iframe", evnt.data);
     if (evnt.data.action == 'scrollToAnchor') {
         onScrollToAnchor(evnt.data.argument);
     }
diff --git a/zundler/assets/zundler_main.js b/zundler/assets/zundler_main.js
index 2a8adc3..6315fa6 100644
--- a/zundler/assets/zundler_main.js
+++ b/zundler/assets/zundler_main.js
@@ -233,7 +233,7 @@ var loadVirtualPage = (function (path, get_params, anchor) {
 window.onload = function() {
     // Set up message listener
     window.addEventListener("message", (evnt) => {
-        console.log("Received message in parent", evnt);
+        console.log("Received message in parent", evnt.data);
         var iframe = document.getElementById(iFrameId);
 
         if (evnt.data.action == 'ready') {