diff --git a/INSTALL.txt b/INSTALL.txt
index da41f4c162233f0d5ebd6693e56c74b6e0aad763..bc62f10be1571050f040bcbbec4bae9bea5cb43e 100644
--- a/INSTALL.txt
+++ b/INSTALL.txt
@@ -2,6 +2,9 @@
    Some instructions about CHAMELEON usage   
 **********************************************
 
+This is a brief discussion about CHAMELEON usage.
+For more information, please read the document users_guide.
+
 Compilation of CHAMELEON libraries and executables are done with CMake 
 (http://www.cmake.org/). This version has been tested with CMake 2.8.8.