diff --git a/src/conf/domain_conf.h b/src/conf/domain_conf.h
index 09368d9c4b..d494e542b2 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;
 }