diff --git a/lib/ansible/modules/cloud/amazon/s3_sync.py b/lib/ansible/modules/cloud/amazon/s3_sync.py
index 8a695e6b45d..30dacfe6112 100644
--- a/lib/ansible/modules/cloud/amazon/s3_sync.py
+++ b/lib/ansible/modules/cloud/amazon/s3_sync.py
@@ -31,7 +31,6 @@ options:
   mode:
     description:
     - sync direction.
-    required: true
     default: 'push'
     choices: [ push ]
   file_change_strategy: