diff --git a/Tools/gdomap.c b/Tools/gdomap.c
index ff56b8b9e..0c810d632 100644
--- a/Tools/gdomap.c
+++ b/Tools/gdomap.c
@@ -2413,7 +2413,6 @@ handle_io()
       if (u_queue != 0)
 	{
 	  FD_SET(udp_desc, &wfds);
-	  FD_SET(udp_desc, &write_fds);
 	}
 
       timeout.tv_sec = 10;