diff --git a/.changeset/chatty-cherries-train.md b/.changeset/chatty-cherries-train.md
new file mode 100644
index 0000000000..18c275f073
--- /dev/null
+++ b/.changeset/chatty-cherries-train.md
@@ -0,0 +1,5 @@
+---
+'rrweb': patch
+---
+
+Fix the statement which is getting changed by Microbundle
diff --git a/packages/rrweb/src/record/index.ts b/packages/rrweb/src/record/index.ts
index 28271b9b5f..c69ee4b80d 100644
--- a/packages/rrweb/src/record/index.ts
+++ b/packages/rrweb/src/record/index.ts
@@ -94,8 +94,10 @@ function record<T = eventWithTime>(
   let passEmitsToParent = false;
   if (!inEmittingFrame) {
     try {
-      window.parent.document; // throws if parent is cross-origin
-      passEmitsToParent = false; // if parent is same origin we collect iframe events from the parent
+      // throws if parent is cross-origin
+      if (window.parent.document) {
+        passEmitsToParent = false; // if parent is same origin we collect iframe events from the parent
+      }
     } catch (e) {
       passEmitsToParent = true;
     }