diff --git a/payload_state_interface.h b/payload_state_interface.h
index 40a13dd..68798ee 100644
--- a/payload_state_interface.h
+++ b/payload_state_interface.h
@@ -192,6 +192,7 @@
   // Sets/gets the P2P download URL, if one is to be used.
   virtual void SetP2PUrl(const std::string& url) = 0;
   virtual std::string GetP2PUrl() const = 0;
+  virtual ErrorCode GetAttemptErrorCode() const = 0;
 };
 
 }  // namespace chromeos_update_engine