diff --git a/app/src/main/java/io/legado/app/ui/book/changecover/CoverAdapter.kt b/app/src/main/java/io/legado/app/ui/book/changecover/CoverAdapter.kt
index 1a062b4ce..6132ca3dd 100644
--- a/app/src/main/java/io/legado/app/ui/book/changecover/CoverAdapter.kt
+++ b/app/src/main/java/io/legado/app/ui/book/changecover/CoverAdapter.kt
@@ -2,6 +2,7 @@ package io.legado.app.ui.book.changecover
 
 import android.content.Context
 import android.view.ViewGroup
+import androidx.recyclerview.widget.DiffUtil
 import io.legado.app.base.adapter.ItemViewHolder
 import io.legado.app.base.adapter.SimpleRecyclerAdapter
 import io.legado.app.data.entities.SearchBook
@@ -11,6 +12,19 @@ import org.jetbrains.anko.sdk27.listeners.onClick
 class CoverAdapter(context: Context, val callBack: CallBack) :
     SimpleRecyclerAdapter<SearchBook, ItemCoverBinding>(context) {
 
+    override val diffItemCallback: DiffUtil.ItemCallback<SearchBook>
+        get() = object : DiffUtil.ItemCallback<SearchBook>() {
+            override fun areItemsTheSame(oldItem: SearchBook, newItem: SearchBook): Boolean {
+                return oldItem.bookUrl == newItem.bookUrl
+            }
+
+            override fun areContentsTheSame(oldItem: SearchBook, newItem: SearchBook): Boolean {
+                return oldItem.originName == newItem.originName
+                        && oldItem.coverUrl == newItem.coverUrl
+            }
+
+        }
+
     override fun getViewBinding(parent: ViewGroup): ItemCoverBinding {
         return ItemCoverBinding.inflate(inflater, parent, false)
     }
diff --git a/app/src/main/java/io/legado/app/ui/book/changesource/ChangeSourceAdapter.kt b/app/src/main/java/io/legado/app/ui/book/changesource/ChangeSourceAdapter.kt
index e3b96fe45..48a9dfcc1 100644
--- a/app/src/main/java/io/legado/app/ui/book/changesource/ChangeSourceAdapter.kt
+++ b/app/src/main/java/io/legado/app/ui/book/changesource/ChangeSourceAdapter.kt
@@ -5,6 +5,7 @@ import android.os.Bundle
 import android.view.View
 import android.view.ViewGroup
 import androidx.appcompat.widget.PopupMenu
+import androidx.recyclerview.widget.DiffUtil
 import io.legado.app.R
 import io.legado.app.base.adapter.ItemViewHolder
 import io.legado.app.base.adapter.SimpleRecyclerAdapter
@@ -19,6 +20,19 @@ import org.jetbrains.anko.sdk27.listeners.onLongClick
 class ChangeSourceAdapter(context: Context, val callBack: CallBack) :
     SimpleRecyclerAdapter<SearchBook, ItemChangeSourceBinding>(context) {
 
+    override val diffItemCallback: DiffUtil.ItemCallback<SearchBook>
+        get() = object : DiffUtil.ItemCallback<SearchBook>() {
+            override fun areItemsTheSame(oldItem: SearchBook, newItem: SearchBook): Boolean {
+                return oldItem.bookUrl == newItem.bookUrl
+            }
+
+            override fun areContentsTheSame(oldItem: SearchBook, newItem: SearchBook): Boolean {
+                return oldItem.originName == newItem.originName
+                        && oldItem.getDisplayLastChapterTitle() == newItem.getDisplayLastChapterTitle()
+            }
+
+        }
+
     override fun getViewBinding(parent: ViewGroup): ItemChangeSourceBinding {
         return ItemChangeSourceBinding.inflate(inflater, parent, false)
     }