--- a/arch/mips/au1000/mtx-1/init.c
+++ b/arch/mips/au1000/mtx-1/init.c
@@ -32,6 +32,7 @@
 #include <linux/init.h>
 
 #include <asm/bootinfo.h>
+#include <asm/string.h>
 
 #include <prom.h>