diff --git a/src/content/autofill.js b/src/content/autofill.js
index 568b52d947..d39cb42c00 100644
--- a/src/content/autofill.js
+++ b/src/content/autofill.js
@@ -990,7 +990,7 @@
             window.__bitwardenFrameId = Math.floor(Math.random() * Math.floor(99999999));
         }
         safari.self.addEventListener('message', function (msgEvent) {
-            var msg = JSON.parse(msgEvent.message);
+            var msg = JSON.parse(msgEvent.message.msg);
             if (msg.bitwardenFrameId != null && window.__bitwardenFrameId !== msg.bitwardenFrameId) {
                 return;
             }