diff --git a/man3/tsearch.3 b/man3/tsearch.3
index 28631825f..a1241e154 100644
--- a/man3/tsearch.3
+++ b/man3/tsearch.3
@@ -24,7 +24,7 @@
 .\"
 .TH TSEARCH 3  2021-03-22 "GNU" "Linux Programmer's Manual"
 .SH NAME
-tsearch, tfind, tdelete, twalk, tdestroy \- manage a binary search tree
+tsearch, tfind, tdelete, twalk, twalk_r, tdestroy \- manage a binary search tree
 .SH SYNOPSIS
 .nf
 .B #include <search.h>