diff --git a/src/models/group.js b/src/models/group.js
index aac86729d5..5651ec2bd2 100644
--- a/src/models/group.js
+++ b/src/models/group.js
@@ -52,7 +52,10 @@ var GroupSchema = new Schema({
   balance: Number,
   logo: String,
   leaderMessage: String
-}, {strict: 'throw'});
+}, {
+  strict: 'throw', 
+  minimize: false
+});
 
 
 /**