diff --git a/server/models/discipline.js b/server/models/discipline.js
index 385f8e9..72a4884 100644
--- a/server/models/discipline.js
+++ b/server/models/discipline.js
@@ -51,9 +51,7 @@ const DisciplineSchema = new Schema({
     type: Boolean,
   },
   teachers: [{
-    username: {
       type: String,
-    }
   }],
 });