diff --git a/sys/dev/mlx5/mlx5_ib/mlx5_ib_main.c b/sys/dev/mlx5/mlx5_ib/mlx5_ib_main.c
index f3e20d0c1bf9..37516b9d15dc 100644
--- a/sys/dev/mlx5/mlx5_ib/mlx5_ib_main.c
+++ b/sys/dev/mlx5/mlx5_ib/mlx5_ib_main.c
@@ -2957,7 +2957,6 @@ static void *mlx5_ib_add(struct mlx5_core_dev *mdev)
 	struct mlx5_ib_dev *dev;
 	enum rdma_link_layer ll;
 	int port_type_cap;
-	const char *name;
 	int err;
 	int i;
 
@@ -2990,9 +2989,7 @@ static void *mlx5_ib_add(struct mlx5_core_dev *mdev)
 
 	MLX5_INIT_DOORBELL_LOCK(&dev->uar_lock);
 
-	name = "mlx5_%d";
-
-	strlcpy(dev->ib_dev.name, name, IB_DEVICE_NAME_MAX);
+	snprintf(dev->ib_dev.name, IB_DEVICE_NAME_MAX, "mlx5_%d", device_get_unit(mdev->pdev->dev.bsddev));
 	dev->ib_dev.owner		= THIS_MODULE;
 	dev->ib_dev.node_type		= RDMA_NODE_IB_CA;
 	dev->ib_dev.local_dma_lkey	= 0 /* not supported for now */;