diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en.h b/drivers/net/ethernet/mellanox/mlx5/core/en.h
index aa36a3a65e72a08047ded5a80f9a0621cf17ecad..b8732e6d2b6b8f6c1f8876ddbab6c3a75fd157b7 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/en.h
+++ b/drivers/net/ethernet/mellanox/mlx5/core/en.h
@@ -616,6 +616,7 @@ enum mlx5e_link_mode {
 	MLX5E_10GBASE_ER	 = 14,
 	MLX5E_40GBASE_SR4	 = 15,
 	MLX5E_40GBASE_LR4	 = 16,
+	MLX5E_50GBASE_SR2	 = 18,
 	MLX5E_100GBASE_CR4	 = 20,
 	MLX5E_100GBASE_SR4	 = 21,
 	MLX5E_100GBASE_KR4	 = 22,