diff --git a/app/src/main/java/io/legado/app/ui/replacerule/ReplaceRuleViewModel.java b/app/src/main/java/io/legado/app/ui/replacerule/ReplaceRuleViewModel.java
deleted file mode 100644
index 4755b3819..000000000
--- a/app/src/main/java/io/legado/app/ui/replacerule/ReplaceRuleViewModel.java
+++ /dev/null
@@ -1,12 +0,0 @@
-package io.legado.app.ui.replacerule;
-
-import android.app.Application;
-import io.legado.app.base.BaseViewModel;
-import org.jetbrains.annotations.NotNull;
-
-public class ReplaceRuleViewModel extends BaseViewModel {
-    public ReplaceRuleViewModel(@NotNull Application application) {
-        super(application);
-
-    }
-}
diff --git a/app/src/main/java/io/legado/app/ui/replacerule/ReplaceRuleViewModel.kt b/app/src/main/java/io/legado/app/ui/replacerule/ReplaceRuleViewModel.kt
new file mode 100644
index 000000000..a1f9ca0d6
--- /dev/null
+++ b/app/src/main/java/io/legado/app/ui/replacerule/ReplaceRuleViewModel.kt
@@ -0,0 +1,8 @@
+package io.legado.app.ui.replacerule
+
+import android.app.Application
+import io.legado.app.base.BaseViewModel
+
+class ReplaceRuleViewModel(application: Application) : BaseViewModel(application) {
+
+}