diff --git a/app/src/main/java/com/hippo/ehviewer/ui/MainActivity.java b/app/src/main/java/com/hippo/ehviewer/ui/MainActivity.java
index 284e548f3..69c691103 100644
--- a/app/src/main/java/com/hippo/ehviewer/ui/MainActivity.java
+++ b/app/src/main/java/com/hippo/ehviewer/ui/MainActivity.java
@@ -95,7 +95,6 @@ public final class MainActivity extends StageActivity
     private static final String KEY_NAV_CHECKED_ITEM = "nav_checked_item";
 
     static {
-        registerLaunchMode(SecurityActivity.class, SceneFragment.LAUNCH_MODE_SINGLE_TASK);
         registerLaunchMode(SignInScene.class, SceneFragment.LAUNCH_MODE_SINGLE_TASK);
         registerLaunchMode(WebViewSignInScene.class, SceneFragment.LAUNCH_MODE_SINGLE_TASK);
         registerLaunchMode(CookieSignInScene.class, SceneFragment.LAUNCH_MODE_SINGLE_TASK);