diff --git a/kernel/sys.c b/kernel/sys.c
index 70ffa84..59aadcd 100644
--- a/kernel/sys.c
+++ b/kernel/sys.c
@@ -1703,8 +1703,8 @@
 	return mask;
 }
 
-asmlinkage long sys_prctl(int option, unsigned long arg2, unsigned long arg3,
-			  unsigned long arg4, unsigned long arg5)
+SYSCALL_DEFINE5(prctl, int, option, unsigned long, arg2, unsigned long, arg3,
+		unsigned long, arg4, unsigned long, arg5)
 {
 	struct task_struct *me = current;
 	unsigned char comm[sizeof(me->comm)];