diff --git a/sys/dev/mlx5/mlx5_core/mlx5_vport.c b/sys/dev/mlx5/mlx5_core/mlx5_vport.c
--- a/sys/dev/mlx5/mlx5_core/mlx5_vport.c
+++ b/sys/dev/mlx5/mlx5_core/mlx5_vport.c
@@ -299,7 +299,7 @@
 EXPORT_SYMBOL_GPL(mlx5_query_nic_vport_mac_address);
 
 int mlx5_modify_nic_vport_mac_address(struct mlx5_core_dev *mdev,
-				      u16 vport, u8 *addr)
+				      u16 vport, u8 addr[ETH_ALEN])
 {
 	void *in;
 	int inlen = MLX5_ST_SZ_BYTES(modify_nic_vport_context_in);