diff --git a/test/dm/pci.c b/test/dm/pci.c
index 8699700..a1dedd8 100644
--- a/test/dm/pci.c
+++ b/test/dm/pci.c
@@ -119,8 +119,13 @@ static int dm_test_pci_drvdata(struct unit_test_state *uts)
 
 	ut_assertok(dm_pci_bus_find_bdf(PCI_BDF(1, 0x08, 0), &swap));
 	ut_asserteq(SWAP_CASE_DRV_DATA, swap->driver_data);
+	ut_assertok(dev_of_valid(swap));
 	ut_assertok(dm_pci_bus_find_bdf(PCI_BDF(1, 0x0c, 0), &swap));
 	ut_asserteq(SWAP_CASE_DRV_DATA, swap->driver_data);
+	ut_assertok(dev_of_valid(swap));
+	ut_assertok(dm_pci_bus_find_bdf(PCI_BDF(1, 0x10, 0), &swap));
+	ut_asserteq(SWAP_CASE_DRV_DATA, swap->driver_data);
+	ut_assertok(!dev_of_valid(swap));
 
 	return 0;
 }