diff --git a/hw/multiboot.c b/hw/multiboot.c
index 394ed0136e83c0a56258d49eb44febb243f5623e..6e6cfb9531d1e4ed4053da04d3f0a52d261d38ca 100644
--- a/hw/multiboot.c
+++ b/hw/multiboot.c
@@ -307,7 +307,7 @@ int load_multiboot(void *fw_cfg,
                                 | MULTIBOOT_FLAGS_MMAP);
     stl_p(bootinfo + MBI_MEM_LOWER,   640);
     stl_p(bootinfo + MBI_MEM_UPPER,   (ram_size / 1024) - 1024);
-    stl_p(bootinfo + MBI_BOOT_DEVICE, 0x8001ffff); /* XXX: use the -boot switch? */
+    stl_p(bootinfo + MBI_BOOT_DEVICE, 0x8000ffff); /* XXX: use the -boot switch? */
     stl_p(bootinfo + MBI_MMAP_ADDR,   ADDR_E820_MAP);
 
     mb_debug("multiboot: mh_entry_addr = %#x\n", mh_entry_addr);