diff --git a/main/inc/lib/display.lib.php b/main/inc/lib/display.lib.php
index e9010e8b34..27837a0a94 100755
--- a/main/inc/lib/display.lib.php
+++ b/main/inc/lib/display.lib.php
@@ -714,7 +714,6 @@ class Display
 
         $image = trim($image);
         $theme = 'themes/' . api_get_visual_theme() . '/icons/';
-        $icon = '';
         $size_extra = '';
 
         if (isset($size)) {
@@ -768,6 +767,7 @@ class Display
                 $img = "$img $alt_text";
             }
         }
+
         return $img;
     }
 
@@ -776,7 +776,7 @@ class Display
      *
      * @param string $image the filename of the file (in the main/img/ folder
      * @param string $alt_text the alt text (probably a language variable)
-     * @param array additional attributes (for instance height, width, onclick, ...)
+     * @param array  $additional_attributes (for instance height, width, onclick, ...)
      * @author Julio Montoya 2010
      */
     public static function img($image_path, $alt_text = '', $additional_attributes = array())
@@ -909,8 +909,7 @@ class Display
         $extra_attributes = array(),
         $show_blank_item = true,
         $blank_item_text = null
-    )
-    {
+    ) {
         $html = '';
         $extra = '';
         $default_id = 'id="' . $name . '" ';
diff --git a/main/inc/lib/template.lib.php b/main/inc/lib/template.lib.php
index 42051dc2c9..e3dd014e78 100755
--- a/main/inc/lib/template.lib.php
+++ b/main/inc/lib/template.lib.php
@@ -185,11 +185,23 @@ class Template
         }
     }
 
+    /**
+     * @param string $image
+     * @param int $size
+     *
+     * @return string
+     */
     public static function get_icon_path($image, $size = ICON_SIZE_SMALL)
     {
-        return Display:: return_icon($image, '', array(), $size, false, true);
+        return Display::return_icon($image, '', array(), $size, false, true);
     }
 
+    /**
+     * @param string $timestamp
+     * @param string $format
+     *
+     * @return string
+     */
     public static function format_date($timestamp, $format = null)
     {
         return api_format_date($timestamp, $format);