diff --git a/advanced/src/schema.graphql b/advanced/src/schema.graphql
index 82cbeae6..f5094beb 100644
--- a/advanced/src/schema.graphql
+++ b/advanced/src/schema.graphql
@@ -24,5 +24,5 @@ type User {
   id: ID!
   email: String!
   name: String!
-  posts: [Post!]!
+  posts: [Post!]
 }