diff --git a/app/src/main/java/io/legado/app/ui/book/info/BookInfoActivity.kt b/app/src/main/java/io/legado/app/ui/book/info/BookInfoActivity.kt
index 0efdf63d5..b809f405a 100644
--- a/app/src/main/java/io/legado/app/ui/book/info/BookInfoActivity.kt
+++ b/app/src/main/java/io/legado/app/ui/book/info/BookInfoActivity.kt
@@ -54,7 +54,6 @@ class BookInfoActivity :
             viewModel.bookData.value?.let { book ->
                 launch {
                     withContext(IO) {
-                        viewModel.durChapterIndex = it.first
                         book.durChapterIndex = it.first
                         book.durChapterPos = it.second
                         appDb.bookDao.update(book)
diff --git a/app/src/main/java/io/legado/app/ui/book/info/BookInfoViewModel.kt b/app/src/main/java/io/legado/app/ui/book/info/BookInfoViewModel.kt
index 9eeda4018..2b43af08c 100644
--- a/app/src/main/java/io/legado/app/ui/book/info/BookInfoViewModel.kt
+++ b/app/src/main/java/io/legado/app/ui/book/info/BookInfoViewModel.kt
@@ -27,7 +27,6 @@ import kotlinx.coroutines.Dispatchers.IO
 class BookInfoViewModel(application: Application) : BaseViewModel(application) {
     val bookData = MutableLiveData<Book>()
     val chapterListData = MutableLiveData<List<BookChapter>>()
-    var durChapterIndex = 0
     var inBookshelf = false
     var bookSource: BookSource? = null
     private var changeSourceCoroutine: Coroutine<*>? = null
@@ -70,7 +69,6 @@ class BookInfoViewModel(application: Application) : BaseViewModel(application) {
 
     private fun upBook(book: Book) {
         execute {
-            durChapterIndex = book.durChapterIndex
             bookData.postValue(book)
             upCoverByRule(book)
             bookSource = if (book.isLocalBook()) null else