diff --git a/sys/dev/mlx5/vport.h b/sys/dev/mlx5/vport.h
--- a/sys/dev/mlx5/vport.h
+++ b/sys/dev/mlx5/vport.h
@@ -84,7 +84,7 @@
 int mlx5_query_nic_vport_mac_address(struct mlx5_core_dev *mdev,
 				     u16 vport, u8 *addr);
 int mlx5_modify_nic_vport_mac_address(struct mlx5_core_dev *dev,
-				      u16 vport, u8 mac[ETH_ALEN]);
+				      u16 vport, u8 *addr);
 int mlx5_set_nic_vport_current_mac(struct mlx5_core_dev *mdev, int vport,
 				   bool other_vport, u8 *addr);
 int mlx5_query_nic_vport_min_inline(struct mlx5_core_dev *mdev,