diff --git a/services/core/java/com/android/server/PinnerService.java b/services/core/java/com/android/server/PinnerService.java
index 93859b35fbe09..3148a62058713 100644
--- a/services/core/java/com/android/server/PinnerService.java
+++ b/services/core/java/com/android/server/PinnerService.java
@@ -345,7 +345,7 @@ public final class PinnerService extends SystemService {
                 @Override
                 public void onUidCachedChanged(int uid, boolean cached) throws RemoteException {
                 }
-            }, UID_OBSERVER_GONE | UID_OBSERVER_ACTIVE, 0, "system");
+            }, UID_OBSERVER_GONE | UID_OBSERVER_ACTIVE, 0, null);
         } catch (RemoteException e) {
             Slog.e(TAG, "Failed to register uid observer", e);
         }