diff --git a/Doc/mac/libmacostools.tex b/Doc/mac/libmacostools.tex
index 5c8487a..1553b11 100644
--- a/Doc/mac/libmacostools.tex
+++ b/Doc/mac/libmacostools.tex
@@ -49,6 +49,7 @@
 could conceivably have incompatible behaviour in some cases.
 
 \section{Standard Module \sectcode{findertools}}
+\label{module-findertools}
 \stmodindex{findertools}
 
 This module contains routines that give Python programs access to some