diff --git a/libraries/legacy/model/admin.php b/libraries/legacy/model/admin.php
index 4b05e0a809855..2b6bcf5480efc 100644
--- a/libraries/legacy/model/admin.php
+++ b/libraries/legacy/model/admin.php
@@ -10,6 +10,7 @@
 defined('JPATH_PLATFORM') or die;
 
 use Joomla\Registry\Registry;
+use Joomla\Utilities\ArrayHelper;
 
 /**
  * Prototype admin model.
@@ -185,7 +186,7 @@ public function batch($commands, $pks, $contexts)
 	{
 		// Sanitize ids.
 		$pks = array_unique($pks);
-		JArrayHelper::toInteger($pks);
+		ArrayHelper::toInteger($pks);
 
 		// Remove any values of zero.
 		if (array_search(0, $pks, true))
@@ -220,7 +221,7 @@ public function batch($commands, $pks, $contexts)
 
 		if ($this->batch_copymove && !empty($commands[$this->batch_copymove]))
 		{
-			$cmd = JArrayHelper::getValue($commands, 'move_copy', 'c');
+			$cmd = ArrayHelper::getValue($commands, 'move_copy', 'c');
 
 			if ($cmd == 'c')
 			{
@@ -871,7 +872,7 @@ public function getItem($pk = null)
 
 		// Convert to the JObject before adding other data.
 		$properties = $table->getProperties(1);
-		$item = JArrayHelper::toObject($properties, 'JObject');
+		$item = ArrayHelper::toObject($properties, 'JObject');
 
 		if (property_exists($item, 'params'))
 		{
@@ -1185,7 +1186,7 @@ public function saveorder($pks = null, $order = null)
 
 		if (empty($pks))
 		{
-			return JError::raiseWarning(500, JText::_($this->text_prefix . '_ERROR_NO_ITEMS_SELECTED'));
+			return JFactory::getApplication()->enqueueMessage(JText::_($this->text_prefix . '_ERROR_NO_ITEMS_SELECTED'), 'warning');
 		}
 
 		// Update ordering values