diff --git a/libs/WindowManager/Shell/src/com/android/wm/shell/bubbles/BubbleStackView.java b/libs/WindowManager/Shell/src/com/android/wm/shell/bubbles/BubbleStackView.java
index 9d0dd3c7fcdb6..d590ab112aaea 100644
--- a/libs/WindowManager/Shell/src/com/android/wm/shell/bubbles/BubbleStackView.java
+++ b/libs/WindowManager/Shell/src/com/android/wm/shell/bubbles/BubbleStackView.java
@@ -968,7 +968,7 @@ public class BubbleStackView extends FrameLayout
             }
         });
         mExpandedViewAlphaAnimator.addUpdateListener(valueAnimator -> {
-            if (mExpandedBubble != null) {
+            if (mExpandedBubble != null && mExpandedBubble.getExpandedView() != null) {
                 mExpandedBubble.getExpandedView().setTaskViewAlpha(
                         (float) valueAnimator.getAnimatedValue());
             }