diff --git a/src/proto_uxst.c b/src/proto_uxst.c
index 5ceb18f..0b8e176 100644
--- a/src/proto_uxst.c
+++ b/src/proto_uxst.c
@@ -48,6 +48,7 @@
 /* Note: must not be declared <const> as its list will be overwritten */
 static struct protocol proto_unix = {
 	.name = "unix_stream",
+	.fam = &proto_fam_unix,
 	.sock_domain = PF_UNIX,
 	.sock_type = SOCK_STREAM,
 	.sock_prot = 0,