diff --git a/real_system_state.h b/real_system_state.h
index 9bd50fe..4ff229d 100644
--- a/real_system_state.h
+++ b/real_system_state.h
@@ -26,7 +26,7 @@
   RealSystemState();
   virtual ~RealSystemState() {}
 
-  virtual bool IsOOBEComplete();
+  virtual bool IsOOBEComplete(base::Time* out_time_of_oobe);
 
   virtual inline void set_device_policy(
       const policy::DevicePolicy* device_policy) {