diff --git a/application/ui.extkeywidget.class.inc.php b/application/ui.extkeywidget.class.inc.php
index c2b166542a..386c061ff7 100644
--- a/application/ui.extkeywidget.class.inc.php
+++ b/application/ui.extkeywidget.class.inc.php
@@ -284,8 +284,8 @@ class UIExtKeyWidget
 				if ($bAddingValue) {
 					$aArguments = [];
 					foreach ($aAdditionalField as $sAdditionalField) {
-						//getAsCSV to have user friendly value in text format
-						array_push($aArguments, $oObj->GetAsCSV($sAdditionalField, ' ', ''));
+						$oAttrDef = MetaModel::GetAttributeDef(get_class($oObj), $sAdditionalField);
+						array_push($aArguments, $oAttrDef->GetValueLabel($oObj->Get($sAdditionalField)));
 					}
 					$aOption['additional_field'] = utils::HtmlEntities(utils::VSprintf($sFormatAdditionalField, $aArguments));
 				}
diff --git a/core/valuesetdef.class.inc.php b/core/valuesetdef.class.inc.php
index 24b46be05e..82f4fdfaf3 100644
--- a/core/valuesetdef.class.inc.php
+++ b/core/valuesetdef.class.inc.php
@@ -404,8 +404,8 @@ class ValueSetObjects extends ValueSetDefinition
 			if (count($aAdditionalField) > 0) {
 				$aArguments = [];
 				foreach ($aAdditionalField as $sAdditionalField) {
-					//getAsCSV to have user friendly value in text format
-					array_push($aArguments, $oObject->GetAsCSV($sAdditionalField,' ',''));
+					$oAttrDef = MetaModel::GetAttributeDef(get_class($oObject), $sAdditionalField);
+					array_push($aArguments, $oAttrDef->GetValueLabel($oObject->Get($sAdditionalField)));
 				}
 				$aData['additional_field'] = utils::VSprintf($sFormatAdditionalField, $aArguments);
 			} else {
diff --git a/sources/Service/Base/ObjectRepository.php b/sources/Service/Base/ObjectRepository.php
index 19bdfd9b2e..e69ca89a2f 100644
--- a/sources/Service/Base/ObjectRepository.php
+++ b/sources/Service/Base/ObjectRepository.php
@@ -210,8 +210,8 @@ class ObjectRepository
 				$aData['has_additional_field'] = true;
 				$aArguments = [];
 				foreach ($aComplementAttributeSpec[1] as $sAdditionalField) {
-					//getAsCSV to have user friendly value in text format
-					$aArguments[] = $oDbObject->GetAsCSV($sAdditionalField,' ','');
+					$oAttrDef = MetaModel::GetAttributeDef(get_class($oDbObject), $sAdditionalField);
+					$aArguments[] = $oAttrDef->GetValueLabel($oDbObject->Get($sAdditionalField));
 				}
 				$aData['additional_field'] = utils::VSprintf($aComplementAttributeSpec[0], $aArguments);
 				$sAdditionalFieldForHtml = utils::EscapeHtml($aData['additional_field']);