diff --git a/libs/WindowManager/Shell/src/com/android/wm/shell/fullscreen/FullscreenTaskListener.java b/libs/WindowManager/Shell/src/com/android/wm/shell/fullscreen/FullscreenTaskListener.java
index 0d75bc451b72a..ee8a7b66cfb7e 100644
--- a/libs/WindowManager/Shell/src/com/android/wm/shell/fullscreen/FullscreenTaskListener.java
+++ b/libs/WindowManager/Shell/src/com/android/wm/shell/fullscreen/FullscreenTaskListener.java
@@ -287,6 +287,9 @@ public class FullscreenTaskListener<T extends AutoCloseable>
     }
 
     private void releaseWindowDecor(T windowDecor) {
+        if (windowDecor == null) {
+            return;
+        }
         try {
             windowDecor.close();
         } catch (Exception e) {