diff --git a/src/app/js/menu/exportTTLModule.js b/src/app/js/menu/exportTTLModule.js
index a2279348..8b8a20dd 100644
--- a/src/app/js/menu/exportTTLModule.js
+++ b/src/app/js/menu/exportTTLModule.js
@@ -271,6 +271,8 @@ module.exports = function ( graph ){
     
     
     objectDef += general_Label_languageExtractor(indent, node.label(), "rdfs:label", true);
+    if not node."rdfs:label"
+      objectDef += general_Label_languageExtractor(indent, node.label(), "skos:prefLabel", true);
     return objectDef;
     
   }