diff --git a/drivers/pci/pci.c b/drivers/pci/pci.c
index 158a7aa2a8e6e..89dece8a41321 100644
--- a/drivers/pci/pci.c
+++ b/drivers/pci/pci.c
@@ -6143,7 +6143,7 @@ static resource_size_t pci_specified_resource_alignment(struct pci_dev *dev,
 		ret = pci_dev_str_match(dev, p, &p);
 		if (ret == 1) {
 			*resize = true;
-			align = 1 << align_order;
+			align = 1ULL << align_order;
 			break;
 		} else if (ret < 0) {
 			pr_err("PCI: Can't parse resource_alignment parameter: %s\n",