diff --git a/channels/misdn_config.c b/channels/misdn_config.c
index 27dfb30011..ee9e68a580 100644
--- a/channels/misdn_config.c
+++ b/channels/misdn_config.c
@@ -314,7 +314,7 @@ static const struct misdn_cfg_spec port_spec[] = {
 	{ "nttimeout", MISDN_CFG_NTTIMEOUT, MISDN_CTYPE_BOOL, "no", NONE ,
 		"Set this to yes if you want calls disconnected in overlap mode" 
 		"when a timeout happens.\n"},
-	{ "msns", MISDN_CFG_MSNS, MISDN_CTYPE_MSNLIST, NO_DEFAULT, NONE,
+	{ "msns", MISDN_CFG_MSNS, MISDN_CTYPE_MSNLIST, "*", NONE,
 		"MSN's for TE ports, listen on those numbers on the above ports, and\n"
 		"\tindicate the incoming calls to Asterisk.\n"
 		"\tHere you can give a comma seperated list, or simply an '*' for any msn." },