diff --git a/man2/undocumented.2 b/man2/undocumented.2
index f610f053e..fafa2c1ef 100644
--- a/man2/undocumented.2
+++ b/man2/undocumented.2
@@ -1,7 +1,7 @@
 .\" Hey Emacs! This file is -*- nroff -*- source.
 .\" This page is in the public domain.
 .\"
-.TH UNIMPLEMENTED 2 2003-02-01 "Linux 2.4.20" "Linux Programmer's Manual"
+.TH UNDOCUMENTED 2 2003-02-01 "Linux 2.4.20" "Linux Programmer's Manual"
 .SH NAME
 madvise1,
 rt_sigaction,