diff --git a/app/src/main/java/io/legado/app/ui/widget/page/DataSource.kt b/app/src/main/java/io/legado/app/ui/widget/page/DataSource.kt
index 92b09194b..6c43b1dee 100644
--- a/app/src/main/java/io/legado/app/ui/widget/page/DataSource.kt
+++ b/app/src/main/java/io/legado/app/ui/widget/page/DataSource.kt
@@ -7,8 +7,6 @@ interface DataSource {
 
     fun setPageIndex(pageIndex: Int)
 
-    fun isPrepared(): Boolean
-
     fun getChapterPosition(): Int
 
     fun getChapter(position: Int): TextChapter?
diff --git a/app/src/main/java/io/legado/app/ui/widget/page/PageView.kt b/app/src/main/java/io/legado/app/ui/widget/page/PageView.kt
index b2481ddbe..85d7be3d1 100644
--- a/app/src/main/java/io/legado/app/ui/widget/page/PageView.kt
+++ b/app/src/main/java/io/legado/app/ui/widget/page/PageView.kt
@@ -48,10 +48,6 @@ class PageView(context: Context, attrs: AttributeSet) : FrameLayout(context, att
                 callback?.setPageIndex(pageIndex)
             }
 
-            override fun isPrepared(): Boolean {
-                return true
-            }
-
             override fun getChapterPosition(): Int {
                 return callback?.durChapterIndex() ?: 0
             }