diff --git a/sys/dev/e1000/if_em.c b/sys/dev/e1000/if_em.c
index 5a22b11df33..a95d606ac34 100644
--- a/sys/dev/e1000/if_em.c
+++ b/sys/dev/e1000/if_em.c
@@ -793,8 +793,8 @@ em_if_attach_pre(if_ctx_t ctx)
 		scctx->isc_tx_tso_size_max = EM_TSO_SIZE;
 		scctx->isc_tx_tso_segsize_max = EM_TSO_SEG_SIZE;
 		scctx->isc_capabilities = scctx->isc_capenable = IGB_CAPS;
-		scctx->isc_tx_csum_flags = CSUM_TCP | CSUM_UDP | CSUM_TSO | CSUM_IP6_TCP \
-			| CSUM_IP6_UDP | CSUM_IP6_TCP;
+		scctx->isc_tx_csum_flags = CSUM_TCP | CSUM_UDP | CSUM_TSO |
+		     CSUM_IP6_TCP | CSUM_IP6_UDP;
 		if (adapter->hw.mac.type != e1000_82575)
 			scctx->isc_tx_csum_flags |= CSUM_SCTP | CSUM_IP6_SCTP;