diff --git a/Boolean_set_operations_2/doc_tex/Boolean_set_operations_2/main.tex b/Boolean_set_operations_2/doc_tex/Boolean_set_operations_2/main.tex
index a54c34256f1..addde929bf5 100644
--- a/Boolean_set_operations_2/doc_tex/Boolean_set_operations_2/main.tex
+++ b/Boolean_set_operations_2/doc_tex/Boolean_set_operations_2/main.tex
@@ -3,7 +3,7 @@
 
 \ccParDims
 
-\chapter{Boolean Set Operations}
+\chapter{2D Regularized Boolean Set-Operations}
 
 \begingroup
 
diff --git a/Boolean_set_operations_2/doc_tex/Boolean_set_operations_2_ref/intro.tex b/Boolean_set_operations_2/doc_tex/Boolean_set_operations_2_ref/intro.tex
index 4dd584ce423..14cf78f022f 100644
--- a/Boolean_set_operations_2/doc_tex/Boolean_set_operations_2_ref/intro.tex
+++ b/Boolean_set_operations_2/doc_tex/Boolean_set_operations_2_ref/intro.tex
@@ -1,7 +1,7 @@
 \RCSdef{\BooleanSetOperationRefRev}{$Id$}
 \RCSdefDate{\BooleanSetOperationRefDate}{$Date$}
 \clearpage
-\chapter{Boolean Set Operations}
+\chapter{2D Regularized Boolean Set-Operations}
 \label{chapterBooleanOperationsRef}
 \ccChapterRelease{\BooleanSetOperationRefRev. \ \BooleanSetOperationRefDate}
 \ccChapterAuthor{Efi Fogel, Ron Wein, Baruch Zukerman, and Dan Halperin}