diff --git a/sys/amd64/pci/pci_bus.c b/sys/amd64/pci/pci_bus.c
index af2d227ce553..c7faf4153016 100644
--- a/sys/amd64/pci/pci_bus.c
+++ b/sys/amd64/pci/pci_bus.c
@@ -473,7 +473,7 @@ pci_hostb_probe(device_t dev)
 	    pci_get_subclass(dev) == PCIS_BRIDGE_HOST) {
 		device_set_desc(dev, "Host to PCI bridge");
 		device_quiet(dev);
-		return 0;
+		return -10000;
 	}
 	return ENXIO;
 }
diff --git a/sys/i386/pci/pci_bus.c b/sys/i386/pci/pci_bus.c
index af2d227ce553..c7faf4153016 100644
--- a/sys/i386/pci/pci_bus.c
+++ b/sys/i386/pci/pci_bus.c
@@ -473,7 +473,7 @@ pci_hostb_probe(device_t dev)
 	    pci_get_subclass(dev) == PCIS_BRIDGE_HOST) {
 		device_set_desc(dev, "Host to PCI bridge");
 		device_quiet(dev);
-		return 0;
+		return -10000;
 	}
 	return ENXIO;
 }