diff --git a/Triangulation_2/demo/Triangulation_2/help/cindex.html b/Triangulation_2/demo/Triangulation_2/help/cindex.html
index 891b9e51d32..33fad0ab0b2 100644
--- a/Triangulation_2/demo/Triangulation_2/help/cindex.html
+++ b/Triangulation_2/demo/Triangulation_2/help/cindex.html
@@ -1,11 +1,11 @@
 <!DOCTYPE HTML PUBLIC "-//IETF//DTD HTML//EN">
 <html>
   <head>
-    <title>Alpha_shapes_2</title>
+    <title>Constrained_triangulation_2</title>
   </head>
 
   <body>
-    <P align="center"><FONT size="5">How to use Triangulation_2 Demo</FONT></P>
+    <P align="center"><FONT size="5">How to use Constrained_triangulation_2 Demo</FONT></P>
     <br>
     Main Functionality
     <UL>
