diff --git a/src/conf/domain_conf.h b/src/conf/domain_conf.h
index 09368d9c4bc1cd74696cddc222ab14855383849c..d494e542b248c9137742e530270139485d45e93b 100644
--- a/src/conf/domain_conf.h
+++ b/src/conf/domain_conf.h
@@ -125,7 +125,7 @@ struct _virDomainDiskDef {
 static inline int
 virDiskHasValidPciAddr(virDomainDiskDefPtr def)
 {
-    return def->pci_addr.domain || def->pci_addr.domain || def->pci_addr.slot;
+    return def->pci_addr.domain || def->pci_addr.bus || def->pci_addr.slot;
 }