diff --git a/htdocs/core/class/html.form.class.php b/htdocs/core/class/html.form.class.php
index edcb68ca3a7..1cc02f0939a 100644
--- a/htdocs/core/class/html.form.class.php
+++ b/htdocs/core/class/html.form.class.php
@@ -58,6 +58,11 @@ class Form
 	 */
 	public $error='';
 
+    /**
+     * @var string[]    Array of error strings
+     */
+    public $errors = array();
+
 	public $num;
 
 	// Cache arrays