diff --git a/kernel/relay.c b/kernel/relay.c
index 9f5326e8a036fd261de4e290ca7364a2eaaa8c22..04f248644e065f601d78744be2bbe580a6aa1810 100644
--- a/kernel/relay.c
+++ b/kernel/relay.c
@@ -39,7 +39,7 @@ static void relay_file_mmap_close(struct vm_area_struct *vma)
 /*
  * fault() vm_op implementation for relay file mapping.
  */
-static int relay_buf_fault(struct vm_fault *vmf)
+static vm_fault_t relay_buf_fault(struct vm_fault *vmf)
 {
 	struct page *page;
 	struct rchan_buf *buf = vmf->vma->vm_private_data;