diff --git a/AndroidManifest.xml b/AndroidManifest.xml
index ad84ff9..95f562f 100644
--- a/AndroidManifest.xml
+++ b/AndroidManifest.xml
@@ -70,6 +70,7 @@
     <uses-permission android:name="android.permission.MANAGE_DEVICE_ADMINS" />
     <uses-permission android:name="android.permission.READ_SEARCH_INDEXABLES" />
     <uses-permission android:name="android.permission.OEM_UNLOCK_STATE" />
+    <uses-permission android:name="android.permission.HIDE_NON_SYSTEM_OVERLAY_WINDOWS" />
 
     <application android:label="@string/settings_label"
             android:icon="@mipmap/ic_launcher_settings"
diff --git a/src/com/android/settings/accessibility/ToggleAccessibilityServicePreferenceFragment.java b/src/com/android/settings/accessibility/ToggleAccessibilityServicePreferenceFragment.java
index 0b7600b..d321831 100644
--- a/src/com/android/settings/accessibility/ToggleAccessibilityServicePreferenceFragment.java
+++ b/src/com/android/settings/accessibility/ToggleAccessibilityServicePreferenceFragment.java
@@ -33,6 +33,8 @@
 import android.text.TextUtils;
 import android.view.LayoutInflater;
 import android.view.View;
+import android.view.Window;
+import android.view.WindowManager;
 import android.view.accessibility.AccessibilityManager;
 import android.widget.ImageView;
 import android.widget.LinearLayout;
@@ -49,6 +51,8 @@
 import java.util.List;
 import java.util.Set;
 
+import static android.view.WindowManager.LayoutParams.PRIVATE_FLAG_HIDE_NON_SYSTEM_OVERLAY_WINDOWS;
+
 public class ToggleAccessibilityServicePreferenceFragment
         extends ToggleFeaturePreferenceFragment implements DialogInterface.OnClickListener {
 
@@ -182,6 +186,10 @@
                         .create();
                 ad.create();
                 ad.getButton(AlertDialog.BUTTON_POSITIVE).setFilterTouchesWhenObscured(true);
+                Window window = ad.getWindow();
+                WindowManager.LayoutParams params = window.getAttributes();
+                params.privateFlags |= PRIVATE_FLAG_HIDE_NON_SYSTEM_OVERLAY_WINDOWS;
+                window.setAttributes(params);
                 return ad;
             }
             case DIALOG_ID_DISABLE_WARNING: {