diff --git a/board/renesas/stout/cpld.c b/board/renesas/stout/cpld.c
index b56ed17..ac8048c 100644
--- a/board/renesas/stout/cpld.c
+++ b/board/renesas/stout/cpld.c
@@ -163,7 +163,7 @@
 	"cpld write addr val\n"
 );
 
-void reset_cpu(ulong addr)
+void reset_cpu(void)
 {
 	cpld_write(CPLD_ADDR_RESET, 1);
 }