diff --git a/var/Widget/Abstract/Contents.php b/var/Widget/Abstract/Contents.php
index 08e24126..428c88ad 100644
--- a/var/Widget/Abstract/Contents.php
+++ b/var/Widget/Abstract/Contents.php
@@ -696,9 +696,11 @@ class Widget_Abstract_Contents extends Widget_Abstract
         }
 
         /** 处理Markdown **/
-        $value['isMarkdown'] = (0 === strpos($value['text'], '<!--markdown-->'));
-        if ($value['isMarkdown']) {
-            $value['text'] = substr($value['text'], 15);
+        if (isset($value['text'])) {
+            $value['isMarkdown'] = (0 === strpos($value['text'], '<!--markdown-->'));
+            if ($value['isMarkdown']) {
+                $value['text'] = substr($value['text'], 15);
+            }
         }
 
         /** 生成聚合链接 */