diff --git a/app/src/main/java/io/legado/app/model/ReadBook.kt b/app/src/main/java/io/legado/app/model/ReadBook.kt
index 1b64f214c..5b1131f22 100644
--- a/app/src/main/java/io/legado/app/model/ReadBook.kt
+++ b/app/src/main/java/io/legado/app/model/ReadBook.kt
@@ -90,7 +90,7 @@ object ReadBook : CoroutineScope by MainScope() {
     }
 
     fun setProgress(progress: BookProgress) {
-        if (progress.durChapterIndex > chapterSize &&
+        if (progress.durChapterIndex < chapterSize &&
             (durChapterIndex != progress.durChapterIndex
                 || durChapterPos != progress.durChapterPos)
         ) {