diff --git a/daemon/call.c b/daemon/call.c
index 338c353a6..0b5bf2b66 100644
--- a/daemon/call.c
+++ b/daemon/call.c
@@ -589,7 +589,7 @@ static int get_port6(struct streamrelay *r, u_int16_t p) {
 
 	nonblock(fd);
 	reuseaddr(fd);
-	setsockopt(fd, IPPROTO_IP, IP_TOS, &r->up->up->call->callmaster->tos, sizeof(r->up->up->call->callmaster->tos));
+	setsockopt(fd, IPPROTO_IPV6, IPV6_TCLASS, &r->up->up->call->callmaster->tos, sizeof(r->up->up->call->callmaster->tos));
 	ipv6only(fd, 0);
 
 	ZERO(sin);