diff --git a/views/bootstrap/class.Bootstrap.php b/views/bootstrap/class.Bootstrap.php
index 23d0d025e..cada2d1f5 100644
--- a/views/bootstrap/class.Bootstrap.php
+++ b/views/bootstrap/class.Bootstrap.php
@@ -1638,7 +1638,7 @@ $(document).ready(function() {
 				if($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()) {
diff --git a/views/bootstrap/class.Settings.php b/views/bootstrap/class.Settings.php
index 0767649b5..99537fb14 100644
--- a/views/bootstrap/class.Settings.php
+++ b/views/bootstrap/class.Settings.php
@@ -534,7 +534,7 @@ $this->showStartPaneContent('site', (!$currenttab || $currenttab == 'site'));
 									case "categories":
 										$categories = $dms->getDocumentCategories();
 										if($categories) {
-											echo "<select class=\"chzn-select".($allowempty ? " data-allow-clear=\"true\"" : "")."\" name=\"extensions[".$extname."][".$confkey."][]\"".(!empty($conf['multiple']) ? "  multiple" : "").(!empty($conf['size']) ? "  size=\"".$conf['size']."\"" : "")." data-placeholder=\"".getMLText("select_category")."\">";
+											echo "<select class=\"chzn-select\"".($allowempty ? " data-allow-clear=\"true\"" : "")."\" name=\"extensions[".$extname."][".$confkey."][]\"".(!empty($conf['multiple']) ? "  multiple" : "").(!empty($conf['size']) ? "  size=\"".$conf['size']."\"" : "")." data-placeholder=\"".getMLText("select_category")."\">";
 											if($allowempty)
 												echo "<option value=\"\"></option>";
 											foreach($categories as $category) {
@@ -549,7 +549,7 @@ $this->showStartPaneContent('site', (!$currenttab || $currenttab == 'site'));
 									case "users":
 										$users = $dms->getAllUsers();
 										if($users) {
-											echo "<select class=\"chzn-select".($allowempty ? " data-allow-clear=\"true\"" : "")."\" name=\"extensions[".$extname."][".$confkey."][]\"".(!empty($conf['multiple']) ? "  multiple" : "").(!empty($conf['size']) ? "  size=\"".$conf['size']."\"" : "")." data-placeholder=\"".getMLText("select_user")."\">";
+											echo "<select class=\"chzn-select\"".($allowempty ? " data-allow-clear=\"true\"" : "")."\" name=\"extensions[".$extname."][".$confkey."][]\"".(!empty($conf['multiple']) ? "  multiple" : "").(!empty($conf['size']) ? "  size=\"".$conf['size']."\"" : "")." data-placeholder=\"".getMLText("select_user")."\">";
 											if($allowempty)
 												echo "<option value=\"\"></option>";
 											foreach($users as $curuser) {
@@ -564,7 +564,7 @@ $this->showStartPaneContent('site', (!$currenttab || $currenttab == 'site'));
 									case "groups":
 										$recs = $dms->getAllGroups();
 										if($recs) {
-											echo "<select class=\"chzn-select".($allowempty ? " data-allow-clear=\"true\"" : "")."\" name=\"extensions[".$extname."][".$confkey."][]\"".(!empty($conf['multiple']) ? "  multiple" : "").(!empty($conf['size']) ? "  size=\"".$conf['size']."\"" : "")." data-placeholder=\"".getMLText("select_group")."\">";
+											echo "<select class=\"chzn-select\"".($allowempty ? " data-allow-clear=\"true\"" : "")."\" name=\"extensions[".$extname."][".$confkey."][]\"".(!empty($conf['multiple']) ? "  multiple" : "").(!empty($conf['size']) ? "  size=\"".$conf['size']."\"" : "")." data-placeholder=\"".getMLText("select_group")."\">";
 											if($allowempty)
 												echo "<option value=\"\"></option>";
 											foreach($recs as $rec) {
@@ -579,7 +579,7 @@ $this->showStartPaneContent('site', (!$currenttab || $currenttab == 'site'));
 									case "attributedefinitions":
 										$recs = $dms->getAllAttributeDefinitions();
 										if($recs) {
-											echo "<select class=\"chzn-select".($allowempty ? " data-allow-clear=\"true\"" : "")."\" name=\"extensions[".$extname."][".$confkey."][]\"".(!empty($conf['multiple']) ? "  multiple" : "").(!empty($conf['size']) ? "  size=\"".$conf['size']."\"" : "")." data-placeholder=\"".getMLText("select_attribute_value")."\">";
+											echo "<select class=\"chzn-select\"".($allowempty ? " data-allow-clear=\"true\"" : "")."\" name=\"extensions[".$extname."][".$confkey."][]\"".(!empty($conf['multiple']) ? "  multiple" : "").(!empty($conf['size']) ? "  size=\"".$conf['size']."\"" : "")." data-placeholder=\"".getMLText("select_attribute_value")."\">";
 											if($allowempty)
 												echo "<option value=\"\"></option>";
 											foreach($recs as $rec) {