diff --git a/main/course_home/activity.php b/main/course_home/activity.php
index be9203ca5a..81ae1a3c18 100755
--- a/main/course_home/activity.php
+++ b/main/course_home/activity.php
@@ -78,7 +78,7 @@ if ($session_id === 0 && api_is_course_admin() && api_is_allowed_to_edit(null, t
     $my_list = CourseHome::get_tools_category(TOOL_INTERACTION);
     $list2 = CourseHome::get_tools_category(TOOL_COURSE_PLUGIN);
 
-    $my_list = array_merge($my_list,$list2);
+    $my_list = array_merge($my_list, $list2);
     $items =  CourseHome::show_tools_category($my_list);
     $content .= return_block(get_lang('Interaction'), $items, 'course-tools-interaction');
 
diff --git a/main/inc/lib/course.lib.php b/main/inc/lib/course.lib.php
index 58a728680e..ff9a20e430 100755
--- a/main/inc/lib/course.lib.php
+++ b/main/inc/lib/course.lib.php
@@ -3485,6 +3485,7 @@ class CourseManager
         $rs_special_course = Database::query($sql);
         $number_of_courses = Database::num_rows($rs_special_course);
         $showCustomIcon = api_get_setting('course_images_in_courses_list');
+
         $courseList = [];
         if ($number_of_courses > 0) {
             while ($course = Database::fetch_array($rs_special_course)) {
diff --git a/main/inc/lib/course_home.lib.php b/main/inc/lib/course_home.lib.php
index 6cc4a61196..9bdc21c966 100755
--- a/main/inc/lib/course_home.lib.php
+++ b/main/inc/lib/course_home.lib.php
@@ -783,7 +783,6 @@ class CourseHome
                 }
 
                 $item['visibility'] = null;
-
                 if (isset($lnk) && is_array($lnk)) {
                     foreach ($lnk as $this_link) {
                         if (empty($tool['adminlink'])) {
@@ -1246,6 +1245,9 @@ class CourseHome
 
     /**
      * Show a toolbar with shortcuts to the course tool
+     * @param int $orientation
+     *
+     * @return string
      */
     public static function show_navigation_tool_shortcuts($orientation = SHORTCUTS_HORIZONTAL)
     {
@@ -1270,15 +1272,18 @@ class CourseHome
                     $html .= ' id="here"';
                 }
                 $html .= ' target="_top" title="'.$navigation_item['name'].'">';
-                $html .= Display::return_icon(substr($navigation_item['image'],0,-3)."png", $navigation_item['name'], null, ICON_SIZE_MEDIUM);
-                //$html .= '<img src="'.api_get_path(WEB_IMG_PATH).$navigation_item['image'].'" alt="'.$navigation_item['name'].'"/>';
+                $html .= Display::return_icon(
+                    substr($navigation_item['image'], 0, -3).'png',
+                    $navigation_item['name'],
+                    null,
+                    ICON_SIZE_MEDIUM
+                );
                 $html .= '</a> ';
                 if ($orientation == SHORTCUTS_VERTICAL) {
                     $html .= '<br />';
                 }
             }
             $html .= '</div>';
-
         }
 
         return $html;