diff --git a/libraries/cms/menu/item.php b/libraries/cms/menu/item.php
index 4d348ee8a9915..039f20d62bed6 100644
--- a/libraries/cms/menu/item.php
+++ b/libraries/cms/menu/item.php
@@ -246,6 +246,26 @@ public function __set($name, $value)
 		$this->set($name, $value);
 	}
 
+	/**
+	 * Method check if a certain otherwise inaccessible properties of the form field object is set.
+	 *
+	 * @param   string  $name  The property name to check.
+	 *
+	 * @return  boolean
+	 *
+	 * @since   __DEPLOY_VERSION__
+	 * @deprecated  4.0 Deprecated without replacement
+	 */
+	public function __isset($name)
+	{
+		if ($name === 'params')
+		{
+			return !($this->params instanceof Registry);
+		}
+
+		return $this->get($name) !== null;
+	}
+
 	/**
 	 * Returns the menu item parameters
 	 *