diff --git a/packages/runtime-dom/src/modules/events.ts b/packages/runtime-dom/src/modules/events.ts
index 57f33b6d..f146a3f8 100644
--- a/packages/runtime-dom/src/modules/events.ts
+++ b/packages/runtime-dom/src/modules/events.ts
@@ -128,7 +128,8 @@ function createInvoker(
     // the solution is simple: we save the timestamp when a handler is attached,
     // and the handler would only fire if the event passed to it was fired
     // AFTER it was attached.
-    if (e.timeStamp >= invoker.lastUpdated - 1) {
+    const timeStamp = e.timeStamp || _getNow()
+    if (timeStamp >= invoker.lastUpdated - 1) {
       callWithAsyncErrorHandling(
         patchStopImmediatePropagation(e, invoker.value),
         instance,