diff --git a/arch/sparc/kernel/pci.c b/arch/sparc/kernel/pci.c
index 1e94f946570ee6bfb56f66b6a42b9d99032d2a75..8aa0d44085860f67cf4f454a8a4c4de5d03d2207 100644
--- a/arch/sparc/kernel/pci.c
+++ b/arch/sparc/kernel/pci.c
@@ -230,7 +230,8 @@ static void pci_parse_of_addrs(struct platform_device *op,
 			res = &dev->resource[(i - PCI_BASE_ADDRESS_0) >> 2];
 		} else if (i == dev->rom_base_reg) {
 			res = &dev->resource[PCI_ROM_RESOURCE];
-			flags |= IORESOURCE_READONLY | IORESOURCE_CACHEABLE;
+			flags |= IORESOURCE_READONLY | IORESOURCE_CACHEABLE
+			      | IORESOURCE_SIZEALIGN;
 		} else {
 			printk(KERN_ERR "PCI: bad cfg reg num 0x%x\n", i);
 			continue;