diff --git a/packages/mixins/page-scroll.ts b/packages/mixins/page-scroll.ts
index f427e305..ffb9662d 100644
--- a/packages/mixins/page-scroll.ts
+++ b/packages/mixins/page-scroll.ts
@@ -38,7 +38,7 @@ export const pageScrollMixin = (scroller: Scroller) =>
 
     detached() {
       const page = getCurrentPage<{ vanPageScroller: Scroller[] }>();
-      if (!isDef(page)) {
+      if (isDef(page)) {
         page.vanPageScroller =
           page.vanPageScroller?.filter((item) => item !== scroller) || [];
       }