diff --git a/model/ConceptMappingPropertyValue.php b/model/ConceptMappingPropertyValue.php
index 133dbb477..58051c835 100644
--- a/model/ConceptMappingPropertyValue.php
+++ b/model/ConceptMappingPropertyValue.php
@@ -210,7 +210,7 @@ public function asJskos($queryExVocabs = true)
             $ret['to']['memberSet'][0]['notation'] = (string) $notation;
         }
 
-        $label = $this->getLabel($queryExVocabs);
+        $label = $this->getLabel(null, $queryExVocabs);
         if (isset($label)) {
             if (is_string($label)) {
                 list($labelLang, $labelValue) = ['-', $label];