diff --git a/sys/ofed/drivers/net/mlx4/en_tx.c b/sys/ofed/drivers/net/mlx4/en_tx.c
index d2852208550..9ad3c59b7d0 100644
--- a/sys/ofed/drivers/net/mlx4/en_tx.c
+++ b/sys/ofed/drivers/net/mlx4/en_tx.c
@@ -780,8 +780,12 @@ retry:
 	tx_desc->ctrl.srcrb_flags = cpu_to_be32(MLX4_WQE_CTRL_CQ_UPDATE |
 						MLX4_WQE_CTRL_SOLICITED);
 	if (mb->m_pkthdr.csum_flags & (CSUM_IP|CSUM_TCP|CSUM_UDP)) {
-		tx_desc->ctrl.srcrb_flags |= cpu_to_be32(MLX4_WQE_CTRL_IP_CSUM |
-							 MLX4_WQE_CTRL_TCP_UDP_CSUM);
+		if (mb->m_pkthdr.csum_flags & CSUM_IP)
+			tx_desc->ctrl.srcrb_flags |=
+			    cpu_to_be32(MLX4_WQE_CTRL_IP_CSUM);
+		if (mb->m_pkthdr.csum_flags & (CSUM_TCP|CSUM_UDP))
+			tx_desc->ctrl.srcrb_flags |=
+			    cpu_to_be32(MLX4_WQE_CTRL_TCP_UDP_CSUM);
 		priv->port_stats.tx_chksum_offload++;
 	}