diff --git a/main/announcements/announcements.php b/main/announcements/announcements.php
index cc2b98b9cc..1d800a8fda 100755
--- a/main/announcements/announcements.php
+++ b/main/announcements/announcements.php
@@ -68,7 +68,6 @@ $tbl_item_property  	= Database::get_course_table(TABLE_ITEM_PROPERTY);
 $lib = api_get_path(LIBRARY_PATH); //avoid useless function calls
 require_once $lib.'groupmanager.lib.php';
 require_once $lib.'mail.lib.inc.php';
-require_once $lib.'debug.lib.inc.php';
 require_once $lib.'tracking.lib.php';
 require_once $lib.'fckeditor/fckeditor.php';
 require_once $lib.'fileUpload.lib.php';
diff --git a/main/auth/courses.php b/main/auth/courses.php
index 75c7f67ab2..2bf017b646 100755
--- a/main/auth/courses.php
+++ b/main/auth/courses.php
@@ -47,7 +47,6 @@ if (!(api_is_platform_admin() || api_is_course_admin() || api_is_allowed_to_crea
 }
 
 // Include additional libraries.
-include_once api_get_path(LIBRARY_PATH).'debug.lib.inc.php';
 require_once api_get_path(LIBRARY_PATH).'course.lib.php';
 require_once api_get_path(LIBRARY_PATH).'mail.lib.inc.php';
 
diff --git a/main/calendar/agenda.php b/main/calendar/agenda.php
index 45e747183e..99b57255d1 100755
--- a/main/calendar/agenda.php
+++ b/main/calendar/agenda.php
@@ -56,9 +56,6 @@ if (!empty($_GET['view'])) {
 */
 // containing the functions for the agenda tool
 require_once 'agenda.inc.php';
-// some debug functions
-require_once $includePath."/lib/debug.lib.inc.php";
-
 /*
   			TREATING THE PARAMETERS
 			1. viewing month only or everything
diff --git a/main/course_info/infocours.php b/main/course_info/infocours.php
index 72265b9d32..e1a3dcbf15 100755
--- a/main/course_info/infocours.php
+++ b/main/course_info/infocours.php
@@ -26,7 +26,6 @@ $nameTools = get_lang('ModifInfo');
 /*	Libraries */
 require_once api_get_path(LIBRARY_PATH).'course.lib.php';
 require_once api_get_path(INCLUDE_PATH).'conf/course_info.conf.php';
-require_once api_get_path(INCLUDE_PATH).'lib/debug.lib.inc.php';
 require_once api_get_path(LIBRARY_PATH).'formvalidator/FormValidator.class.php';
 
 /*	Constants and variables */
diff --git a/main/course_info/postpone.php b/main/course_info/postpone.php
index c1198054f9..b51bfb01c9 100755
--- a/main/course_info/postpone.php
+++ b/main/course_info/postpone.php
@@ -40,7 +40,6 @@ TD {border-bottom: thin dashed Gray;}
 require '../inc/global.inc.php';
 $this_section = SECTION_COURSES;
 
-@include api_get_path(LIBRARY_PATH).'debug.lib.inc.php';
 Display::display_header($nameTools, 'Settings');
 
 //include api_get_path(CONFIGURATION_PATH).'postpone.conf.php';
diff --git a/main/create_course/add_course.php b/main/create_course/add_course.php
index ff41816b27..caf1d3326f 100755
--- a/main/create_course/add_course.php
+++ b/main/create_course/add_course.php
@@ -25,7 +25,6 @@ require_once api_get_path(CONFIGURATION_PATH).'add_course.conf.php';
 // require_once additional libraries
 require_once api_get_path(LIBRARY_PATH).'add_course.lib.inc.php';
 require_once api_get_path(LIBRARY_PATH).'course.lib.php';
-require_once api_get_path(LIBRARY_PATH).'debug.lib.inc.php';
 require_once api_get_path(LIBRARY_PATH).'fileManage.lib.php';
 require_once api_get_path(LIBRARY_PATH).'formvalidator/FormValidator.class.php';
 require_once api_get_path(CONFIGURATION_PATH).'course_info.conf.php';
diff --git a/main/dropbox/dropbox_init.inc.php b/main/dropbox/dropbox_init.inc.php
index 3d039aa06d..edaca268c7 100755
--- a/main/dropbox/dropbox_init.inc.php
+++ b/main/dropbox/dropbox_init.inc.php
@@ -52,8 +52,6 @@ require_once api_get_path(LIBRARY_PATH).'fileUpload.lib.php';
 api_protect_course_script();
 
 /*	Libraries */
-
-require_once api_get_path(LIBRARY_PATH).'debug.lib.inc.php'; // TODO: Is this needed? Another technology is used for testing/debugging now.
 require_once api_get_path(LIBRARY_PATH).'course.lib.php';
 require_once api_get_path(LIBRARY_PATH).'groupmanager.lib.php';
 
diff --git a/main/group/group_category.php b/main/group/group_category.php
index bb335e5f0b..9a16a82f6f 100755
--- a/main/group/group_category.php
+++ b/main/group/group_category.php
@@ -11,7 +11,6 @@ $language_file = 'group';
 require_once '../inc/global.inc.php';
 $this_section = SECTION_COURSES;
 require_once api_get_path(LIBRARY_PATH).'groupmanager.lib.php';
-require_once api_get_path(LIBRARY_PATH).'debug.lib.inc.php';
 require_once api_get_path(LIBRARY_PATH).'formvalidator/FormValidator.class.php';
 if (!api_is_allowed_to_edit(false,true) || !(isset ($_GET['id']) || isset ($_POST['id']) || isset ($_GET['action']) || isset ($_POST['action']))) {
 	api_not_allowed();
diff --git a/main/inc/lib/add_course.lib.inc.php b/main/inc/lib/add_course.lib.inc.php
index 246c212531..829c9ca82a 100755
--- a/main/inc/lib/add_course.lib.inc.php
+++ b/main/inc/lib/add_course.lib.inc.php
@@ -2623,7 +2623,7 @@ function checkArchive($pathToArchive) {
  */
 function readPropertiesInArchive($archive, $isCompressed = TRUE) {
 	include api_get_path(LIBRARY_PATH) . "pclzip/pclzip.lib.php";
-	printVar(dirname($archive), "Zip : ");
+	debug::printVar(dirname($archive), "Zip : ");
 	$uid = api_get_user_id();
 	/*
 	string tempnam ( string dir, string prefix)
diff --git a/main/search/index.php b/main/search/index.php
old mode 100644
new mode 100755
index 1d27c9c522..a2aa970ed9
--- a/main/search/index.php
+++ b/main/search/index.php
@@ -11,7 +11,6 @@ $this_section =  SECTION_COURSES;
 
 if (extension_loaded('xapian')) {
 	include_once (api_get_path(LIBRARY_PATH).'course.lib.php');
-	include_once (api_get_path(LIBRARY_PATH).'debug.lib.inc.php');
 	include_once (api_get_path(LIBRARY_PATH).'system_announcements.lib.php');
 	include_once (api_get_path(LIBRARY_PATH).'groupmanager.lib.php');
 	include_once (api_get_path(LIBRARY_PATH).'usermanager.lib.php');
diff --git a/main/user/subscribe_user.php b/main/user/subscribe_user.php
index e6f24b96ba..b667b2ae5f 100755
--- a/main/user/subscribe_user.php
+++ b/main/user/subscribe_user.php
@@ -784,9 +784,3 @@ function display_extra_profile_fields_filter()
 	echo '</form>';
 
 }
-
-function debug($var) {
-	echo '<pre>';
-	print_r($var);
-	echo '</pre>';
-}
diff --git a/main/user/user.php b/main/user/user.php
index 27dd9be034..afe9e3d42b 100755
--- a/main/user/user.php
+++ b/main/user/user.php
@@ -34,7 +34,6 @@ api_protect_course_script(true);
 
 
 /*		Libraries	*/
-require_once api_get_path(LIBRARY_PATH).'debug.lib.inc.php';
 require_once api_get_path(LIBRARY_PATH).'export.lib.inc.php';
 require_once api_get_path(LIBRARY_PATH).'course.lib.php';
 require_once api_get_path(LIBRARY_PATH).'sortabletable.class.php';
diff --git a/main/work/work.php b/main/work/work.php
index 71ee7fa411..ed962a8366 100755
--- a/main/work/work.php
+++ b/main/work/work.php
@@ -72,7 +72,6 @@ isset($_SESSION['id_session']) ? $id_session = $_SESSION['id_session'] : $id_ses
 // Including necessary files
 require_once 'work.lib.php';
 require_once api_get_path(LIBRARY_PATH).'course.lib.php';
-require_once api_get_path(LIBRARY_PATH).'debug.lib.inc.php';
 require_once api_get_path(LIBRARY_PATH).'security.lib.php';
 require_once api_get_path(LIBRARY_PATH).'formvalidator/FormValidator.class.php';
 require_once api_get_path(LIBRARY_PATH).'document.lib.php';