diff --git a/Doc/lib/libfuncs.tex b/Doc/lib/libfuncs.tex
index 55bf36a5167..70be8adb9af 100644
--- a/Doc/lib/libfuncs.tex
+++ b/Doc/lib/libfuncs.tex
@@ -1,4 +1,5 @@
 \section{Built-in Functions}
+\label{built-in-funcs}
 
 The Python interpreter has a number of functions built into it that
 are always available.  They are listed here in alphabetical order.
diff --git a/Doc/libfuncs.tex b/Doc/libfuncs.tex
index 55bf36a5167..70be8adb9af 100644
--- a/Doc/libfuncs.tex
+++ b/Doc/libfuncs.tex
@@ -1,4 +1,5 @@
 \section{Built-in Functions}
+\label{built-in-funcs}
 
 The Python interpreter has a number of functions built into it that
 are always available.  They are listed here in alphabetical order.