Index: boot/arch/ia64/include/arch/ski.h
===================================================================
--- boot/arch/ia64/include/arch/ski.h	(revision 1b20da07baaa3e3c424f62c927274e676e4295cd)
+++ boot/arch/ia64/include/arch/ski.h	(revision ed88c8e9e48e792fdd0df46568e33e36eb624db3)
@@ -30,8 +30,5 @@
 #define BOOT_ia64_SKI_H_
 
-#include <stddef.h>
-#include <str.h>
-
-extern void ski_putchar(const wchar_t);
+extern void ski_putchar(char);
 
 #endif