diff --git a/extension.php b/extension.php
index bbf7738..873530e 100644
--- a/extension.php
+++ b/extension.php
@@ -28,7 +28,7 @@ class KagiSummarizerExtension extends Minz_Extension {
   }
 
   public function addSummarizeButton(FreshRSS_Entry $entry): FreshRSS_Entry {
-    $entry->_content('<h1>Hello World</h1>' . $entry->_content());
+    $entry->_content('<h1>Hello World</h1>' . $entry->content());
     return $entry;
   }
 }