diff --git a/application/datamapper/htmlform.php b/application/datamapper/htmlform.php
index 85d8c8b..f0dedc5 100644
--- a/application/datamapper/htmlform.php
+++ b/application/datamapper/htmlform.php
@@ -614,7 +614,7 @@ function _options($list, $sel)
 		{
 			if(is_array($label))
 			{
-				$l .= '<optgroup label="' . htmlspecialchars($key) . '">';
+				$l .= '<optgroup label="' . htmlspecialchars($opt) . '">';
 				$l .= $this->_options($label, $sel);
 				$l .= '</optgroup>';
 			}