diff --git a/src/gb/gprs_ns2_sns.c b/src/gb/gprs_ns2_sns.c
index 027d1da..2cb4293 100644
--- a/src/gb/gprs_ns2_sns.c
+++ b/src/gb/gprs_ns2_sns.c
@@ -1556,7 +1556,9 @@
 
 	gss = (struct ns2_sns_state *) nse->bss_sns_fi->priv;
 	llist_for_each_entry(endpoint, &gss->sns_endpoints, list) {
-		osmo_sockaddr_str_from_sockaddr(&addr_str, &endpoint->saddr.u.sas);
+		/* It's unlikely that an error happens, but let's better be safe. */
+		if (osmo_sockaddr_str_from_sockaddr(&addr_str, &endpoint->saddr.u.sas) != 0)
+			addr_str = (struct osmo_sockaddr_str) { .ip = "<INVALID>" };
 		vty_out(vty, "  ip-sns %s %u%s", addr_str.ip, addr_str.port, VTY_NEWLINE);
 	}
 }