diff --git a/core/java/android/net/IConnectivityManager.aidl b/core/java/android/net/IConnectivityManager.aidl
index e3c49ac..57f5967 100644
--- a/core/java/android/net/IConnectivityManager.aidl
+++ b/core/java/android/net/IConnectivityManager.aidl
@@ -101,7 +101,7 @@
 
     void protectVpn(in ParcelFileDescriptor socket);
 
-    String prepareVpn(String packageName);
+    boolean prepareVpn(String oldPackage, String newPackage);
 
     ParcelFileDescriptor establishVpn(in VpnConfig config);