diff --git a/binder/android/os/IVold.aidl b/binder/android/os/IVold.aidl
index cc23498..75fef06 100644
--- a/binder/android/os/IVold.aidl
+++ b/binder/android/os/IVold.aidl
@@ -29,8 +29,7 @@
 
     void onUserAdded(int userId, int userSerial);
     void onUserRemoved(int userId);
-    void onUserStarted(int userId, in @utf8InCpp String[] packageNames, in int[] appIds,
-            in @utf8InCpp String[] sandboxIds);
+    void onUserStarted(int userId);
     void onUserStopped(int userId);
 
     void addAppIds(in @utf8InCpp String[] packageNames, in int[] appIds);