diff --git a/Subdivision_method_3/doc_tex/Subdivision_method_3/main.tex b/Subdivision_method_3/doc_tex/Subdivision_method_3/main.tex
index 6cd157ebe83..331f887fdb6 100644
--- a/Subdivision_method_3/doc_tex/Subdivision_method_3/main.tex
+++ b/Subdivision_method_3/doc_tex/Subdivision_method_3/main.tex
@@ -11,7 +11,7 @@
 
 \ccParDims
 
-\chapter{Subdivision Methods}
+\chapter{3D Surface Subdivision Methods}
 \label{chapterSubdivision}
 \ccChapterRelease{\subdivisionRev. \ \subdivisionDate}
 \ccChapterAuthor{Le-Jeng Andy Shiue}
diff --git a/Subdivision_method_3/doc_tex/Subdivision_method_3_ref/intro.tex b/Subdivision_method_3/doc_tex/Subdivision_method_3_ref/intro.tex
index 1e76a4bcc3b..f06952b33a7 100644
--- a/Subdivision_method_3/doc_tex/Subdivision_method_3_ref/intro.tex
+++ b/Subdivision_method_3/doc_tex/Subdivision_method_3_ref/intro.tex
@@ -8,7 +8,7 @@
 \RCSdefDate{\polyhedronRefDate}{$Date$}
 % +------------------------------------------------------------------------+
 
-\chapter{Subdivision Methods}
+\chapter{3D Surface Subdivision Methods}
 \label{chapterSubdivisionRef}
 \ccChapterRelease{\subdivisionRefRev. \ \subdivisionRefDate}
 \ccChapterAuthor{Le-Jeng Andy Shiue}