diff --git a/server/gnpsi_relay_server.cc b/server/gnpsi_relay_server.cc
index 739c960..d7f34d7 100644
--- a/server/gnpsi_relay_server.cc
+++ b/server/gnpsi_relay_server.cc
@@ -51,6 +51,7 @@ int SetUpReadSocket(int port, int addr_family,
     socket_provider->Close(socket_fd);
     return -1;
   }
+  return 0;
   return socket_fd;
 }