diff --git a/man2/mmap.2 b/man2/mmap.2
index 7debdcfde..4de946226 100644
--- a/man2/mmap.2
+++ b/man2/mmap.2
@@ -834,6 +834,7 @@ main(int argc, char *argv[])
 .BR remap_file_pages (2),
 .BR setrlimit (2),
 .BR shmat (2),
+.BR userfaultfd (2),
 .BR shm_open (3),
 .BR shm_overview (7)