diff --git a/share/tmac/doc2html b/share/tmac/doc2html
index 2155eacd0985..d406a4cfe546 100644
--- a/share/tmac/doc2html
+++ b/share/tmac/doc2html
@@ -1,4 +1,4 @@
-.\" $NetBSD: doc2html,v 1.66 2015/11/22 05:13:00 kamil Exp $
+.\" $NetBSD: doc2html,v 1.67 2016/11/22 00:36:49 kamil Exp $
 .\"
 .\" Copyright (c) 1998, 1999, 2008 The NetBSD Foundation, Inc.
 .\" All rights reserved.
@@ -596,6 +596,7 @@ Unknown .Bl list type \\$1 (#\\n(.c)
 .if "\\$1"libpmc" \&Performance Counters Library (libpmc, -lpmc)
 .if "\\$1"libposix" \&POSIX Compatibility Library (libposix, -lposix)
 .if "\\$1"libpthread" \&POSIX Thread Library (libpthread, -lpthread)
+.if "\\$1"libpthread_dbg" \&POSIX Debug Thread Library (libpthread_dbg, -lpthread_dbg)
 .if "\\$1"libresolv" \&DNS Resolver Library (libresolv, -lresolv)
 .if "\\$1"librt" \&POSIX Real-time Library (librt, -lrt)
 .if "\\$1"libsaslc" \&Simple Authentication and Security Layer client library (libsaslc, -lsaslc)