diff --git a/framework/yii/bootstrap/Widget.php b/framework/yii/bootstrap/Widget.php
index 7636239..b830a38 100644
--- a/framework/yii/bootstrap/Widget.php
+++ b/framework/yii/bootstrap/Widget.php
@@ -71,7 +71,7 @@ class Widget extends \yii\base\Widget
 			BootstrapAsset::register($view);
 		}
 		/** @var \yii\web\AssetBundle $assetClass */
-		$assetClass = 'yii\bootstrap\\' . ucfirst($name);
+		$assetClass = 'yii\bootstrap\\' . ucfirst($name) . 'Asset';
 		$assetClass::register($view);
 
 		if ($this->clientOptions !== false) {