diff --git a/library/NS_Emulation.ttcn b/library/NS_Emulation.ttcn
index 7cccb25..ca4d1d6 100644
--- a/library/NS_Emulation.ttcn
+++ b/library/NS_Emulation.ttcn
@@ -83,7 +83,9 @@
 		/* Connect the UDP socket */
 		res := f_IPL4_connect(NSCP, config.remote_ip, config.remote_udp_port, config.local_ip, config.local_udp_port, 0, { udp := {}});
 		if (not ispresent(res.connId)) {
-			setverdict(fail, "Could not connect NS UDP socket, check your configuration");
+			setverdict(fail, "Could not connect NS UDP socket from " &
+				   config.local_ip & ":"  & int2str(config.local_udp_port) &
+				   " to " & config.remote_ip & ":" & int2str(config.remote_udp_port));
 			mtc.stop;
 		}
 		g_conn_id := res.connId;