diff --git a/doc/latex/stringhax.tex b/doc/latex/stringhax.tex
index bc8960c..23bee2c 100644
--- a/doc/latex/stringhax.tex
+++ b/doc/latex/stringhax.tex
@@ -7,7 +7,7 @@
 \end{description}
 
 
-\subsection*{Overview}
+\subsection{Overview}
 
 This module provides several procedures to manipulate strings.