diff --git a/openbsc/src/nat/bsc_nat.c b/openbsc/src/nat/bsc_nat.c
index 826f288..538472a 100644
--- a/openbsc/src/nat/bsc_nat.c
+++ b/openbsc/src/nat/bsc_nat.c
@@ -898,7 +898,7 @@
                 LOGP(DNAT, LOGL_ERROR, "Failed to set TCP_NODELAY: %s\n", strerror(errno));
 
 	rc = setsockopt(fd, IPPROTO_IP, IP_TOS,
-			&nat->bsc_ip_tos, sizeof(nat->bsc_ip_tos));
+			&nat->bsc_ip_dscp, sizeof(nat->bsc_ip_dscp));
 	if (rc != 0)
 		LOGP(DNAT, LOGL_ERROR, "Failed to set IP_TOS: %s\n", strerror(errno));