diff --git a/views/bootstrap/class.Bootstrap.php b/views/bootstrap/class.Bootstrap.php
index 5917f5b81..6f58067dd 100644
--- a/views/bootstrap/class.Bootstrap.php
+++ b/views/bootstrap/class.Bootstrap.php
@@ -1408,7 +1408,7 @@ $(document).ready(function() {
 				if($attrdef->getMultipleValues()) {
 					$content .= "[]\" multiple";
 				} else {
-					$content .= "\"";
+					$content .= "\" data-allow-clear=\"true\"";
 				}
 				$content .= "".((!$norequire && $attrdef->getMinValues() > 0) ? ' required' : '')." class=\"chzn-select\" data-placeholder=\"".getMLText("select_value")."\">";
 				if(!$attrdef->getMultipleValues()) {