diff --git a/mm/page_alloc.c b/mm/page_alloc.c
index 3b21a13..fe14a8c 100644
--- a/mm/page_alloc.c
+++ b/mm/page_alloc.c
@@ -1896,7 +1896,7 @@
 static struct notifier_block pageset_notifier =
 	{ &pageset_cpuup_callback, NULL, 0 };
 
-void __init setup_per_cpu_pageset()
+void __init setup_per_cpu_pageset(void)
 {
 	int err;