diff --git a/framework/helpers/base/Html.php b/framework/helpers/base/Html.php
index 5e7f4ad..bb1fed3 100644
--- a/framework/helpers/base/Html.php
+++ b/framework/helpers/base/Html.php
@@ -728,7 +728,7 @@ class Html
 		if (!isset($options['size'])) {
 			$options['size'] = 4;
 		}
-		if (isset($options['multiple']) && $options['multiple'] && substr($name, -2) !== '[]') {
+		if (!empty($options['multiple']) && substr($name, -2) !== '[]') {
 			$name .= '[]';
 		}
 		$options['name'] = $name;
diff --git a/framework/widgets/ActiveForm.php b/framework/widgets/ActiveForm.php
index 48bc181..8192bc0 100644
--- a/framework/widgets/ActiveForm.php
+++ b/framework/widgets/ActiveForm.php
@@ -64,7 +64,7 @@ class ActiveForm extends Widget
 			$models = array($models);
 		}
 
-		$showAll = isset($options['showAll']) && $options['showAll'];
+		$showAll = !empty($options['showAll']);
 		$lines = array();
 		/** @var $model Model */
 		foreach ($models as $model) {