diff --git a/lib/ansible/modules/files/synchronize.py b/lib/ansible/modules/files/synchronize.py
index 08578056413..a5e3b476495 100644
--- a/lib/ansible/modules/files/synchronize.py
+++ b/lib/ansible/modules/files/synchronize.py
@@ -252,6 +252,7 @@ def main():
             ssh_args = dict(type='str'),
             partial = dict(default='no', type='bool'),
             verify_host = dict(default='no', type='bool'),
+            mode = dict(default='push', choices=['push', 'pull']),
         ),
         supports_check_mode = True
     )