diff --git a/doc/resolvers.md b/doc/resolvers.md
index cfd5f777..7e3d7146 100644
--- a/doc/resolvers.md
+++ b/doc/resolvers.md
@@ -163,6 +163,7 @@ You can even also define the Lambda function definition inline under the dataSou
 appSync:
   resolvers:
     Query.user:
+      kind: UNIT
       dataSource:
         type: 'AWS_LAMBDA'
         config: