diff --git a/Alpha_shapes_2/doc_tex/Alpha_shapes_2_ref/intro.tex b/Alpha_shapes_2/doc_tex/Alpha_shapes_2_ref/intro.tex
index 35ffa335669..dc8f1706845 100644
--- a/Alpha_shapes_2/doc_tex/Alpha_shapes_2_ref/intro.tex
+++ b/Alpha_shapes_2/doc_tex/Alpha_shapes_2_ref/intro.tex
@@ -97,7 +97,7 @@ finite number of different $\alpha$-shapes and corresponding
 $\alpha$-values.
 
 
-\section{Reference Pages}
+\section{Classified Reference Pages}
 
 \subsection*{Concepts}