diff --git a/core/java/android/service/wallpaper/WallpaperService.java b/core/java/android/service/wallpaper/WallpaperService.java
index 230f51191ee89..7f0a666da91fa 100644
--- a/core/java/android/service/wallpaper/WallpaperService.java
+++ b/core/java/android/service/wallpaper/WallpaperService.java
@@ -2231,7 +2231,7 @@ public abstract class WallpaperService extends Service {
 
             mDestroyed = true;
 
-            if (mIWallpaperEngine.mDisplayManager != null) {
+            if (mIWallpaperEngine != null && mIWallpaperEngine.mDisplayManager != null) {
                 mIWallpaperEngine.mDisplayManager.unregisterDisplayListener(mDisplayListener);
             }