diff --git a/core/src/components/popover/readme.md b/core/src/components/popover/readme.md
index 910a21851c..7017ee1555 100644
--- a/core/src/components/popover/readme.md
+++ b/core/src/components/popover/readme.md
@@ -346,8 +346,8 @@ export default defineComponent({
   setup() {
     const isOpenRef = ref(false);
     const event = ref();
-    const setOpen = (state: boolean, event?: Event) => {
-      event.value = event; 
+    const setOpen = (state: boolean, ev?: Event) => {
+      event.value = ev; 
       isOpenRef.value = state;
     }
     return { isOpenRef, setOpen, event }
diff --git a/core/src/components/popover/usage/vue.md b/core/src/components/popover/usage/vue.md
index 6d3608a3e7..14c57b3d6c 100644
--- a/core/src/components/popover/usage/vue.md
+++ b/core/src/components/popover/usage/vue.md
@@ -76,8 +76,8 @@ export default defineComponent({
   setup() {
     const isOpenRef = ref(false);
     const event = ref();
-    const setOpen = (state: boolean, event?: Event) => {
-      event.value = event; 
+    const setOpen = (state: boolean, ev?: Event) => {
+      event.value = ev; 
       isOpenRef.value = state;
     }
     return { isOpenRef, setOpen, event }