diff --git a/src/mail_menu.c b/src/mail_menu.c
index e2d59e7..397c5a0 100644
--- a/src/mail_menu.c
+++ b/src/mail_menu.c
@@ -146,7 +146,7 @@ int msg_is_to(struct user_record *user, char *addressed_to, char *address, int t
 	} else {
 		myname = strdup(user->loginname);
 	}
-	if (type == NETWORK_FIDO) {
+	if (type == NETWORK_FIDO && address != NULL) {
 		if (strcasecmp(myname, addressed_to) == 0) {
 			dest = parse_fido_addr(address);
 			if (conf.mail_conferences[msgconf]->fidoaddr->zone == dest->zone &&