diff --git a/mm/mprotect.c b/mm/mprotect.c
index d0f6e7c..abe2694 100644
--- a/mm/mprotect.c
+++ b/mm/mprotect.c
@@ -217,8 +217,8 @@
 	return error;
 }
 
-asmlinkage long
-sys_mprotect(unsigned long start, size_t len, unsigned long prot)
+SYSCALL_DEFINE3(mprotect, unsigned long, start, size_t, len,
+		unsigned long, prot)
 {
 	unsigned long vm_flags, nstart, end, tmp, reqprot;
 	struct vm_area_struct *vma, *prev;