diff --git a/var/Typecho/Common.php b/var/Typecho/Common.php
index 2579fc07..02f7b8e1 100644
--- a/var/Typecho/Common.php
+++ b/var/Typecho/Common.php
@@ -202,13 +202,7 @@ class Typecho_Common
     public static function init()
     {
         /** 设置自动载入函数 */
-        if (function_exists('spl_autoload_register')) {
-            spl_autoload_register(array('Typecho_Common', '__autoLoad'));
-        } else {
-            function __autoLoad($className) {
-                Typecho_Common::__autoLoad($className);
-            }
-        }
+        spl_autoload_register(array('Typecho_Common', '__autoLoad'));
 
         /** 兼容php6 */
         if (function_exists('get_magic_quotes_gpc') && get_magic_quotes_gpc()) {
diff --git a/var/Widget/Themes/List.php b/var/Widget/Themes/List.php
index 6feef13e..2833b6bf 100644
--- a/var/Widget/Themes/List.php
+++ b/var/Widget/Themes/List.php
@@ -69,7 +69,7 @@ class Widget_Themes_List extends Typecho_Widget
                     }
 
                     $screen = array_filter(glob($theme . '/*'), function ($path) {
-                        return preg_match("/\.(jpg|png|gif|bmp|jpeg)$/i", $path);
+                        return preg_match("/screenshot\.(jpg|png|gif|bmp|jpeg)$/i", $path);
                     });
 
                     if ($screen) {