diff --git a/quickstep/src/com/android/quickstep/views/DigitalWellBeingToast.java b/quickstep/src/com/android/quickstep/views/DigitalWellBeingToast.java
index af80d5f..7cd6756 100644
--- a/quickstep/src/com/android/quickstep/views/DigitalWellBeingToast.java
+++ b/quickstep/src/com/android/quickstep/views/DigitalWellBeingToast.java
@@ -326,7 +326,11 @@
     }
 
     private void setBannerOutline() {
-        mOldBannerOutlineProvider = mBanner.getOutlineProvider();
+        // TODO(b\273367585) to investigate why mBanner.getOutlineProvider() can be null
+        mOldBannerOutlineProvider = mBanner.getOutlineProvider() != null
+                ? mBanner.getOutlineProvider()
+                : ViewOutlineProvider.BACKGROUND;
+
         mBanner.setOutlineProvider(new ViewOutlineProvider() {
             @Override
             public void getOutline(View view, Outline outline) {