diff --git a/daemon/face/udp-channel.hpp b/daemon/face/udp-channel.hpp
index 0243dd6..f5dd16e 100644
--- a/daemon/face/udp-channel.hpp
+++ b/daemon/face/udp-channel.hpp
@@ -69,7 +69,8 @@
    */
   void
   connect(const udp::Endpoint& remoteEndpoint,
-          const FaceCreatedCallback& onFaceCreated);
+          const FaceCreatedCallback& onFaceCreated,
+          const ConnectFailedCallback& onConnectFailed);
   /**
    * \brief Create a face by establishing connection to the specified
    *        remote host and remote port