diff --git a/CHANGELOG b/CHANGELOG
index 732125b18..92d1cd25d 100644
--- a/CHANGELOG
+++ b/CHANGELOG
@@ -3,6 +3,7 @@
 --------------------------------------------------------------------------------
 - conversion from pdf to png replaces alpha channel with white
 - add list of conversion services in debug menu of admin tool
+- use chosen select for custom attributes
 
 --------------------------------------------------------------------------------
                      Changes in version 5.1.29
diff --git a/views/bootstrap4/class.Bootstrap4.php b/views/bootstrap4/class.Bootstrap4.php
index dfe2eab70..58fb5b981 100644
--- a/views/bootstrap4/class.Bootstrap4.php
+++ b/views/bootstrap4/class.Bootstrap4.php
@@ -1994,7 +1994,7 @@ $(document).ready(function() {
 		default:
 			if($valueset = $attrdef->getValueSetAsArray()) {
 				$content .= "<input type=\"hidden\" name=\"".$fieldname."[".$attrdef->getId()."]\" value=\"\"/>";
-				$content .= "<select class=\"form-control\" id=\"".$fieldname."_".$attrdef->getId()."\" name=\"".$fieldname."[".$attrdef->getId()."]";
+				$content .= "<select id=\"".$fieldname."_".$attrdef->getId()."\" name=\"".$fieldname."[".$attrdef->getId()."]";
 				if($attrdef->getMultipleValues() || $alwaysmultiple) {
 					$content .= "[]\" multiple";
 				} else {