diff --git a/main/inc/lib/course.lib.php b/main/inc/lib/course.lib.php
index 2a29ae641b..b45dd4dacb 100755
--- a/main/inc/lib/course.lib.php
+++ b/main/inc/lib/course.lib.php
@@ -2618,7 +2618,7 @@ class CourseManager {
         $all_user_categories = get_user_course_categories();
     
         // Step 0: We display the course without a user category.
-        display_courses_in_category(0, 'true');
+        self :: display_courses_in_category(0, 'true');
     
         // Step 1: We get all the categories of the user.
         $tucc = Database::get_user_personal_table(TABLE_USER_COURSE_CATEGORY);
@@ -2635,7 +2635,7 @@ class CourseManager {
                         echo $row['title'];
                         echo '</span>';
                     echo '</li>';
-                    display_courses_in_category($row['id']);
+                    self :: display_courses_in_category($row['id']);
             echo '</ul>';
             echo '</div>';
         }
diff --git a/main/inc/lib/display.lib.php b/main/inc/lib/display.lib.php
index 4b26f1e691..10cc8a72b9 100755
--- a/main/inc/lib/display.lib.php
+++ b/main/inc/lib/display.lib.php
@@ -935,5 +935,42 @@ class Display {
             } 
         });  */    	
     }
+    /**
+     * Display create course link
+     *
+     */
+    function display_create_course_link() {
+        echo '<li><a href="main/create_course/add_course.php">'.(api_get_setting('course_validation') == 'true' ? get_lang('CreateCourseRequest') : get_lang('CourseCreate')).'</a></li>';
+    }
     
+    
+    /**
+     * Display dashboard link
+     *
+     */
+    function display_dashboard_link() {
+        echo '<li><a href="main/dashboard/index.php">'.get_lang('Dashboard').'</a></li>';
+    }
+    
+    /**
+     * Display edit course list links
+     *
+     */
+    function display_edit_course_list_links() {
+        echo '<li><a href="main/auth/courses.php">'.get_lang('CourseManagement').'</a></li>';
+    }
+    
+    /**
+     * Show history sessions
+     *
+     */
+    function display_history_course_session() {
+        if (api_get_setting('use_session_mode') == 'true') {
+            if (isset($_GET['history']) && intval($_GET['history']) == 1) {
+                echo '<li><a href="user_portal.php">'.get_lang('DisplayTrainingList').'</a></li>';
+            } else {
+                echo '<li><a href="user_portal.php?history=1">'.get_lang('HistoryTrainingSessions').'</a></li>';
+            }
+        }
+    }
 } //end class Display
\ No newline at end of file
diff --git a/user_portal.php b/user_portal.php
index 63bc6a46dc..dabae3ad52 100755
--- a/user_portal.php
+++ b/user_portal.php
@@ -153,9 +153,6 @@ Display :: display_header($nameTools);
 /*
         FUNCTIONS
 
-        display_admin_links()
-        display_create_course_link()
-        display_edit_course_list_links()
         display_digest($toolsList, $digest, $orderKey, $courses)
         show_notification($my_course)
 
@@ -163,54 +160,6 @@ Display :: display_header($nameTools);
         get_user_course_categories()
 */
 
-/**
- * Warning: This function defines a global variable.
- * @todo Use the correct get_path function.
- */
-function display_admin_links() {
-    global $rootAdminWeb;
-    echo '<li><a href="'.$rootAdminWeb.'">'.get_lang('PlatformAdmin').'</a></li>';
-}
-
-/**
- * Display create course link
- *
- */
-function display_create_course_link() {
-    echo '<li><a href="main/create_course/add_course.php">'.(api_get_setting('course_validation') == 'true' ? get_lang('CreateCourseRequest') : get_lang('CourseCreate')).'</a></li>';
-}
-
-
-/**
- * Display dashboard link
- *
- */
-function display_dashboard_link() {
-    echo '<li><a href="main/dashboard/index.php">'.get_lang('Dashboard').'</a></li>';
-}
-
-/**
- * Display edit course list links
- *
- */
-function display_edit_course_list_links() {
-    echo '<li><a href="main/auth/courses.php">'.get_lang('CourseManagement').'</a></li>';
-}
-
-/**
- * Show history sessions
- *
- */
-function display_history_course_session() {
-    if (api_get_setting('use_session_mode') == 'true') {
-        if (isset($_GET['history']) && intval($_GET['history']) == 1) {
-            echo '<li><a href="user_portal.php">'.get_lang('DisplayTrainingList').'</a></li>';
-        } else {
-            echo '<li><a href="user_portal.php?history=1">'.get_lang('HistoryTrainingSessions').'</a></li>';
-        }
-    }
-}
-
 /**
  * Displays a digest e.g. short summary of new agenda and announcements items.
  * This used to be displayed in the right hand menu, but is now
@@ -1277,14 +1226,14 @@ echo '<span class="menusectioncaption">'.get_lang('MenuUser').'</span>';
 if ($show_menu) {
     echo '<ul class="menulist">';
     if ($show_create_link) {
-        display_create_course_link();
+        Display :: display_create_course_link();
     }
     if ($show_course_link) {
         if (!api_is_drh()) {
-            display_edit_course_list_links();
-            display_history_course_session();
+            Display :: display_edit_course_list_links();
+            Display :: display_history_course_session();
         } else {
-            display_dashboard_link();
+            Display :: display_dashboard_link();
         }
     }
     if ($show_digest_link) {