diff --git a/services/core/java/com/android/server/notification/NotificationManagerService.java b/services/core/java/com/android/server/notification/NotificationManagerService.java
index 495a2ed..bd198dd 100644
--- a/services/core/java/com/android/server/notification/NotificationManagerService.java
+++ b/services/core/java/com/android/server/notification/NotificationManagerService.java
@@ -7151,6 +7151,10 @@
             return false;
         }
 
+        if (userId == UserHandle.USER_ALL) {
+            userId = USER_SYSTEM;
+        }
+
         try {
             final String[] pkgs = mPackageManager.getPackagesForUid(callingUid);
             if (pkgs == null) {
diff --git a/services/tests/uiservicestests/src/com/android/server/notification/NotificationManagerServiceTest.java b/services/tests/uiservicestests/src/com/android/server/notification/NotificationManagerServiceTest.java
index e75a30b..5ba1eb2 100644
--- a/services/tests/uiservicestests/src/com/android/server/notification/NotificationManagerServiceTest.java
+++ b/services/tests/uiservicestests/src/com/android/server/notification/NotificationManagerServiceTest.java
@@ -3807,6 +3807,20 @@
     }
 
     @Test
+    public void testIsCallerInstantApp_userAllNotification() throws Exception {
+        ApplicationInfo info = new ApplicationInfo();
+        info.privateFlags = ApplicationInfo.PRIVATE_FLAG_INSTANT;
+        when(mPackageManager.getApplicationInfo(anyString(), anyInt(), eq(UserHandle.USER_SYSTEM)))
+                .thenReturn(info);
+        when(mPackageManager.getPackagesForUid(anyInt())).thenReturn(new String[]{"any"});
+
+        assertTrue(mService.isCallerInstantApp(45770, UserHandle.USER_ALL));
+
+        info.privateFlags = 0;
+        assertFalse(mService.isCallerInstantApp(575370, UserHandle.USER_ALL ));
+    }
+
+    @Test
     public void testResolveNotificationUid_sameApp_nonSystemUser() throws Exception {
         ApplicationInfo info = new ApplicationInfo();
         info.uid = Binder.getCallingUid();