diff --git a/app/build.gradle b/app/build.gradle
index 94e3b5a36..902baadc6 100644
--- a/app/build.gradle
+++ b/app/build.gradle
@@ -225,4 +225,7 @@ dependencies {
 
     //代码编辑com.github.AmrDeveloper:CodeView已集成到应用内
     //epubLib集成到应用内
+
+    // LeakCanary
+    debugImplementation 'com.squareup.leakcanary:leakcanary-android:2.7'
 }
diff --git a/app/src/main/java/io/legado/app/ui/book/read/ReadBookActivity.kt b/app/src/main/java/io/legado/app/ui/book/read/ReadBookActivity.kt
index 85eccb647..c3d572263 100644
--- a/app/src/main/java/io/legado/app/ui/book/read/ReadBookActivity.kt
+++ b/app/src/main/java/io/legado/app/ui/book/read/ReadBookActivity.kt
@@ -976,6 +976,7 @@ class ReadBookActivity : BaseReadBookActivity(),
         textActionMenu.dismiss()
         binding.readView.onDestroy()
         ReadBook.msg = null
+        ReadBook.callBack = null
         if (!BuildConfig.DEBUG) {
             Backup.autoBack(this)
         }