diff --git a/ChangeLog b/ChangeLog
index fc139b4ca..a8c5b4503 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,8 @@
+2010-07-02  Colin Watson  <cjwatson@ubuntu.com>
+
+	* kern/efi/init.c (grub_efi_init): set_watchdog_timer takes four
+	arguments, not three.
+
 2010-07-02  Colin Watson  <cjwatson@ubuntu.com>
 
 	* util/grub-mkconfig_lib.in (uses_abstraction): New function.
diff --git a/kern/efi/init.c b/kern/efi/init.c
index d8a85eddf..c124aa292 100644
--- a/kern/efi/init.c
+++ b/kern/efi/init.c
@@ -36,8 +36,8 @@ grub_efi_init (void)
   /* Initialize the memory management system.  */
   grub_efi_mm_init ();
 
-  efi_call_3 (grub_efi_system_table->boot_services->set_watchdog_timer,
-	      0, 0, 0);
+  efi_call_4 (grub_efi_system_table->boot_services->set_watchdog_timer,
+	      0, 0, 0, NULL);
 
   grub_efidisk_init ();
 }