diff --git a/cpu/i386/sc520.c b/cpu/i386/sc520.c
index 12e8f38..b958f8d 100644
--- a/cpu/i386/sc520.c
+++ b/cpu/i386/sc520.c
@@ -341,7 +341,7 @@
 		       SC520_PCI_MEMORY_BUS,
 		       SC520_PCI_MEMORY_PHYS,
 		       SC520_PCI_MEMORY_SIZE,
-		       PCI_REGION_MEM | PCI_REGION_MEMORY);
+		       PCI_REGION_MEM | PCI_REGION_SYS_MEMORY);
 
 	/* PCI memory space */
 	pci_set_region(hose->regions + 1,