diff --git a/app/src/main/java/io/legado/app/ui/readbook/ReadBookActivity.kt b/app/src/main/java/io/legado/app/ui/readbook/ReadBookActivity.kt
index 00cc39274..783d79a97 100644
--- a/app/src/main/java/io/legado/app/ui/readbook/ReadBookActivity.kt
+++ b/app/src/main/java/io/legado/app/ui/readbook/ReadBookActivity.kt
@@ -408,7 +408,7 @@ class ReadBookActivity : VMBaseActivity<ReadBookViewModel>(R.layout.activity_rea
             if (it) {
                 moveToNextChapter()
             } else {
-                viewModel.durPageIndex += viewModel.durPageIndex + 1
+                viewModel.durPageIndex = viewModel.durPageIndex + 1
                 page_view.upContent()
                 viewModel.saveRead()
             }