diff --git a/ButtonGroup.php b/ButtonGroup.php
index 8b08b61..bbf54b4 100644
--- a/ButtonGroup.php
+++ b/ButtonGroup.php
@@ -72,7 +72,7 @@ class ButtonGroup extends Widget
     }
 
     /**
-     * Generates the buttons that compound the group as specified on [[items]].
+     * Generates the buttons that compound the group as specified on [[buttons]].
      * @return string the rendering result.
      */
     protected function renderButtons()