diff --git a/config_inc.php b/config_inc.php
index 7bb4ea6e01..d727e807e4 100644
--- a/config_inc.php
+++ b/config_inc.php
@@ -151,6 +151,8 @@
              ############################
 
 	# --- jpgraph settings --- #
+	# Initial Version from Duncan Lisset
+	# 
 	# To use the Jpgraph addon you need the JPGRAPH package from
 	# http://www.aditus.nu/jpgraph/index.php
 	# You can place the package whereever you want, but you have
diff --git a/summary_jpgraph_page.php3 b/summary_jpgraph_page.php3
index 6b2a9a6908..344c51cb1e 100644
--- a/summary_jpgraph_page.php3
+++ b/summary_jpgraph_page.php3
@@ -3,6 +3,9 @@
 	# Copyright (C) 2000, 2001  Kenzaburo Ito - kenito@300baud.org
 	# This program is distributed under the terms and conditions of the GPL
 	# See the README and LICENSE files for details
+	
+	# Initial code for this addon cames from Duncan Lisset
+	# Modified and "make mantis codeguidlines compatible" by Rufinus
 ?>
 <? include( "core_API.php" ) ?>
 <? login_cookie_check() ?>