diff --git a/js/questionset.js b/js/questionset.js
index e848d7e..8440de5 100644
--- a/js/questionset.js
+++ b/js/questionset.js
@@ -118,7 +118,8 @@ H5P.QuestionSet = function (options, contentId) {
   for (var i=0; i<params.questions.length; i++) {
     var question = params.questions[i];
     // TODO: Render on init, inject in template.
-    var tmp = new (H5P.classFromName(question.library))(question.params, contentId);
+    var libraryObject = H5P.libraryFromString(question.library);
+    var tmp = new (H5P.classFromName(libraryObject.machineName))(question.params, contentId);
     questionInstances.push(tmp);
   }
 
diff --git a/semantics.json b/semantics.json
index 4c19b89..d948b65 100644
--- a/semantics.json
+++ b/semantics.json
@@ -64,14 +64,7 @@
           "type": "library",
           "label": "Question library",
           "description": "Library for this question.",
-          "options": [
-            {
-              "machineName": "H5P.MultiChoice",
-              "majorVersion": 1,
-              "minorVersion": 0,
-              "defaultStyles": true
-            }
-          ]
+          "options": ["H5P.MultiChoice 1.0"]
         }
       ]
     }