diff --git a/versions/2016-10-31.md b/versions/2016-10-31.md
index d3a3d27ec3..3569205b51 100644
--- a/versions/2016-10-31.md
+++ b/versions/2016-10-31.md
@@ -780,7 +780,7 @@ NOTE: To specify a Cognito UserPool as an event source for a Lambda function, bo
 ```yaml
 Type: Cognito
 Properties:
-  Bucket: Ref: MyUserPool
+  UserPool: Ref: MyUserPool
   Trigger: PreSignUp
 ```