diff --git a/core/res/res/layout/work_widget_mask_view.xml b/core/res/res/layout/work_widget_mask_view.xml
index a6fb17aa4f6db..21f1bf413fa90 100644
--- a/core/res/res/layout/work_widget_mask_view.xml
+++ b/core/res/res/layout/work_widget_mask_view.xml
@@ -15,6 +15,7 @@ Copyright (C) 2015 The Android Open Source Project
     limitations under the License.
 -->
 <FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    android:theme="@android:style/Theme.DeviceDefault.DayNight"
     android:id="@android:id/background"
     android:layout_width="match_parent"
     android:layout_height="match_parent"