diff --git a/man3/dirfd.3 b/man3/dirfd.3
index 2f5f1f4a9..5d06f0e8f 100644
--- a/man3/dirfd.3
+++ b/man3/dirfd.3
@@ -100,6 +100,7 @@ This function was a BSD extension, present in 4.3BSD-Reno, not in 4.2BSD.
 .\" It is present in libc5 (since 5.1.2) and in glibc2.
 .SH SEE ALSO
 .BR open (2),
+.BR openat (2),
 .BR closedir (3),
 .BR opendir (3),
 .BR readdir (3),