diff --git a/app/src/main/java/io/legado/app/base/BaseActivity.kt b/app/src/main/java/io/legado/app/base/BaseActivity.kt
index 8fab7d576..1b5f22bf6 100644
--- a/app/src/main/java/io/legado/app/base/BaseActivity.kt
+++ b/app/src/main/java/io/legado/app/base/BaseActivity.kt
@@ -27,9 +27,7 @@ abstract class BaseActivity<VM : ViewModel> : AppCompatActivity() {
         onViewModelCreated(viewModel, savedInstanceState)
     }
 
-    open fun onViewModelCreated(viewModel: VM, savedInstanceState: Bundle?) {
-
-    }
+    abstract fun onViewModelCreated(viewModel: VM, savedInstanceState: Bundle?)
 
     override fun onCreateOptionsMenu(menu: Menu?): Boolean {
         return menu?.let {
diff --git a/app/src/main/java/io/legado/app/ui/about/AboutActivity.kt b/app/src/main/java/io/legado/app/ui/about/AboutActivity.kt
index 150e8a027..fff5b7433 100644
--- a/app/src/main/java/io/legado/app/ui/about/AboutActivity.kt
+++ b/app/src/main/java/io/legado/app/ui/about/AboutActivity.kt
@@ -13,7 +13,7 @@ class AboutActivity : BaseActivity<AndroidViewModel>() {
         get() = R.layout.activity_about
 
     override fun onViewModelCreated(viewModel: AndroidViewModel, savedInstanceState: Bundle?) {
-        super.onViewModelCreated(viewModel, savedInstanceState)
+
     }
 
 }
diff --git a/app/src/main/java/io/legado/app/ui/replacerule/ReplaceRuleActivity.kt b/app/src/main/java/io/legado/app/ui/replacerule/ReplaceRuleActivity.kt
index 2c282e458..22d27b639 100644
--- a/app/src/main/java/io/legado/app/ui/replacerule/ReplaceRuleActivity.kt
+++ b/app/src/main/java/io/legado/app/ui/replacerule/ReplaceRuleActivity.kt
@@ -32,7 +32,6 @@ class ReplaceRuleActivity : BaseActivity<ReplaceRuleViewModel>() {
     private var allEnabled = false
 
     override fun onViewModelCreated(viewModel: ReplaceRuleViewModel, savedInstanceState: Bundle?) {
-        super.onViewModelCreated(viewModel, savedInstanceState)
         initRecyclerView()
         initDataObservers()
         initSwipeToDelete()