diff --git a/sys/dev/mlx5/mlx5_ib/mlx5_ib_main.c b/sys/dev/mlx5/mlx5_ib/mlx5_ib_main.c
--- a/sys/dev/mlx5/mlx5_ib/mlx5_ib_main.c
+++ b/sys/dev/mlx5/mlx5_ib/mlx5_ib_main.c
@@ -1883,7 +1883,7 @@
 		MLX5_SET(fte_match_set_lyr_2_4, outer_headers_c,
 			 ethertype, 0xffff);
 		MLX5_SET(fte_match_set_lyr_2_4, outer_headers_v,
-			 ethertype, IPPROTO_IPV6);
+			 ethertype, ETHERTYPE_IPV6);
 
 		memcpy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, outer_headers_c,
 				    src_ipv4_src_ipv6.ipv6_layout.ipv6),