diff --git a/drivers/net/arcnet/com20020-pci.c b/drivers/net/arcnet/com20020-pci.c
index a12bf83be7502..e3b7c14e619fd 100644
--- a/drivers/net/arcnet/com20020-pci.c
+++ b/drivers/net/arcnet/com20020-pci.c
@@ -96,6 +96,7 @@ static int com20020pci_probe(struct pci_dev *pdev,
 			ret = -ENOMEM;
 			goto out_port;
 		}
+		dev->dev_port = i;
 
 		dev->netdev_ops = &com20020_netdev_ops;