diff --git a/program/include/html.php b/program/include/html.php
index a11a1a4b2..68bc66b36 100644
--- a/program/include/html.php
+++ b/program/include/html.php
@@ -248,7 +248,7 @@ class html_inputfield extends html
 {
     protected $tagname = 'input';
     protected $type = 'text';
-    protected $allowed = array('type','name','value','size','tabindex','autocomplete','checked','onchange');
+    protected $allowed = array('type','name','value','size','tabindex','autocomplete','checked','onchange','onclick');
 
     public function __construct($attrib = array())
     {