diff --git a/app/src/main/AndroidManifest.xml b/app/src/main/AndroidManifest.xml
index 4b31bd77..1929e001 100644
--- a/app/src/main/AndroidManifest.xml
+++ b/app/src/main/AndroidManifest.xml
@@ -11,7 +11,8 @@
         android:theme="@style/Theme.MyApplication">
         <activity
             android:name=".activity.SettingsActivity"
-            android:exported="true">
+            android:exported="true"
+            android:launchMode="singleTop">
             <intent-filter>
                 <action android:name="android.intent.action.MAIN" />
                 <category android:name="android.intent.category.LAUNCHER"/>
diff --git a/app/src/main/java/com/lt2333/simplicitytools/activity/SettingsActivity.kt b/app/src/main/java/com/lt2333/simplicitytools/activity/SettingsActivity.kt
index d2bf72de..b09d39cb 100644
--- a/app/src/main/java/com/lt2333/simplicitytools/activity/SettingsActivity.kt
+++ b/app/src/main/java/com/lt2333/simplicitytools/activity/SettingsActivity.kt
@@ -43,7 +43,12 @@ class SettingsActivity : AppCompatActivity() {
         } catch (exception: SecurityException) {
             AlertDialog.Builder(this)
                 .setMessage("您似乎正在使用过时的 LSPosed 版本或 LSPosed 未激活，请更新 LSPosed 或者激活后再试。")
+                .setCancelable(false)
+                .setPositiveButton("确定", DialogInterface.OnClickListener { dialogInterface, i ->
+                    android.os.Process.killProcess(android.os.Process.myPid())
+                })
                 .show()
+
         }
     }