diff --git a/packages/SystemUI/AndroidManifest.xml b/packages/SystemUI/AndroidManifest.xml
index 88edd12..7871020 100644
--- a/packages/SystemUI/AndroidManifest.xml
+++ b/packages/SystemUI/AndroidManifest.xml
@@ -211,6 +211,8 @@
     <!-- Permission necessary to change car audio volume through CarAudioManager -->
     <uses-permission android:name="android.car.permission.CAR_CONTROL_AUDIO_VOLUME" />
 
+    <uses-permission android:name="android.permission.HIDE_NON_SYSTEM_OVERLAY_WINDOWS" />
+
     <application
         android:name=".SystemUIApplication"
         android:persistent="true"
diff --git a/packages/SystemUI/src/com/android/systemui/SlicePermissionActivity.java b/packages/SystemUI/src/com/android/systemui/SlicePermissionActivity.java
index 56cb888..19f8416 100644
--- a/packages/SystemUI/src/com/android/systemui/SlicePermissionActivity.java
+++ b/packages/SystemUI/src/com/android/systemui/SlicePermissionActivity.java
@@ -14,6 +14,8 @@
 
 package com.android.systemui;
 
+import static android.view.WindowManager.LayoutParams.PRIVATE_FLAG_HIDE_NON_SYSTEM_OVERLAY_WINDOWS;
+
 import android.app.Activity;
 import android.app.AlertDialog;
 import android.app.slice.SliceManager;
@@ -61,7 +63,9 @@
                     .setNegativeButton(R.string.slice_permission_deny, this)
                     .setPositiveButton(R.string.slice_permission_allow, this)
                     .setOnDismissListener(this)
-                    .show();
+                    .create();
+            dialog.getWindow().addPrivateFlags(PRIVATE_FLAG_HIDE_NON_SYSTEM_OVERLAY_WINDOWS);
+            dialog.show();
             TextView t1 = dialog.getWindow().getDecorView().findViewById(R.id.text1);
             t1.setText(getString(R.string.slice_permission_text_1, app2));
             TextView t2 = dialog.getWindow().getDecorView().findViewById(R.id.text2);