diff --git a/core/java/android/app/WallpaperManager.java b/core/java/android/app/WallpaperManager.java
index 219afea02c48d..a7ad6193b0dc7 100644
--- a/core/java/android/app/WallpaperManager.java
+++ b/core/java/android/app/WallpaperManager.java
@@ -910,7 +910,7 @@ public class WallpaperManager {
      * wallpaper.
      */
     public void setResource(@RawRes int resid) throws IOException {
-        setResource(resid, FLAG_SYSTEM);
+        setResource(resid, FLAG_SYSTEM | FLAG_LOCK);
     }
 
     /**
@@ -1016,7 +1016,7 @@ public class WallpaperManager {
      */
     public int setBitmap(Bitmap fullImage, Rect visibleCropHint, boolean allowBackup)
             throws IOException {
-        return setBitmap(fullImage, visibleCropHint, allowBackup, FLAG_SYSTEM);
+        return setBitmap(fullImage, visibleCropHint, allowBackup, FLAG_SYSTEM | FLAG_LOCK);
     }
 
     /**
@@ -1154,7 +1154,7 @@ public class WallpaperManager {
      */
     public int setStream(InputStream bitmapData, Rect visibleCropHint, boolean allowBackup)
             throws IOException {
-        return setStream(bitmapData, visibleCropHint, allowBackup, FLAG_SYSTEM);
+        return setStream(bitmapData, visibleCropHint, allowBackup, FLAG_SYSTEM | FLAG_LOCK);
     }
 
     /**
@@ -1393,7 +1393,7 @@ public class WallpaperManager {
      */
     @SystemApi
     public void clearWallpaper() {
-        clearWallpaper(FLAG_SYSTEM, mContext.getUserId());
+        clearWallpaper(FLAG_SYSTEM | FLAG_LOCK, mContext.getUserId());
     }
 
     /**