diff --git a/website/server/models/group.js b/website/server/models/group.js
index 15cd463ba7..19efe3065c 100644
--- a/website/server/models/group.js
+++ b/website/server/models/group.js
@@ -113,7 +113,7 @@ schema.plugin(baseModel, {
   noSet: ['_id', 'balance', 'quest', 'memberCount', 'chat', 'challengeCount', 'tasksOrder', 'purchased'],
   private: ['purchased.plan'],
   toJSONTransform (plainObj, originalDoc) {
-    if (plainObj.purchased) plainObj.purchased.active = originalDoc.purchased.plan && originalDoc.purchased.plan.customerId;
+    if (plainObj.purchased) plainObj.purchased.active = originalDoc.isSubscribed();
   },
 });