diff --git a/ChangeLog b/ChangeLog
index 6ea130dee..a87c472b6 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,9 @@
+2012-06-15  Vladimir Serbinenko  <phcoder@gmail.com>
+
+	* grub-core/lib/mips/loongson/reboot.c (grub_reboot): Use 32-bit
+	sized ports since unlike on real hardware qemu supports only 32-bit
+	regs.
+
 2012-06-15  Vladimir Serbinenko  <phcoder@gmail.com>
 
 	* Makefile.util.def (grub-mkrescue): Enable on loongson.
diff --git a/grub-core/lib/mips/loongson/reboot.c b/grub-core/lib/mips/loongson/reboot.c
index 1b510784b..d45d600e2 100644
--- a/grub-core/lib/mips/loongson/reboot.c
+++ b/grub-core/lib/mips/loongson/reboot.c
@@ -32,8 +32,8 @@ grub_reboot (void)
   switch (grub_arch_machine)
     {
     case GRUB_ARCH_MACHINE_FULOONG2E:
-      grub_outb (grub_inb (0xbfe00104) & ~4, 0xbfe00104);
-      grub_outb (grub_inb (0xbfe00104) | 4, 0xbfe00104);
+      grub_outl (grub_inl (0xbfe00104) & ~4, 0xbfe00104);
+      grub_outl (grub_inl (0xbfe00104) | 4, 0xbfe00104);
       break;
     case GRUB_ARCH_MACHINE_FULOONG2F:
       {