diff --git a/Doc/lib/libobjs.tex b/Doc/lib/libobjs.tex
index 86d91a1..3c7d798 100644
--- a/Doc/lib/libobjs.tex
+++ b/Doc/lib/libobjs.tex
@@ -1,4 +1,4 @@
-\chapter{Built-In Objects \label{builtin}}
+\chapter{Built-in Objects \label{builtin}}
 
 Names for built-in exceptions and functions and a number of constants are
 found in a separate