diff --git a/app/src/main/java/io/legado/app/ui/widget/page/delegate/SimulationPageDelegate.kt b/app/src/main/java/io/legado/app/ui/widget/page/delegate/SimulationPageDelegate.kt
index 4086da380..c705fded2 100644
--- a/app/src/main/java/io/legado/app/ui/widget/page/delegate/SimulationPageDelegate.kt
+++ b/app/src/main/java/io/legado/app/ui/widget/page/delegate/SimulationPageDelegate.kt
@@ -35,6 +35,7 @@ class SimulationPageDelegate(pageView: PageView) : PageDelegate(pageView) {
 
     override fun onPageUp() {
         pageView.curlView?.updatePages()
+        pageView.curlView?.invalidate()
     }
 
     private inner class PageProvider : CurlView.PageProvider {