diff --git a/lib/ansible/modules/cloud/amazon/s3_sync.py b/lib/ansible/modules/cloud/amazon/s3_sync.py
index 2ad3a8e0b41..1547da4f6b0 100644
--- a/lib/ansible/modules/cloud/amazon/s3_sync.py
+++ b/lib/ansible/modules/cloud/amazon/s3_sync.py
@@ -428,12 +428,11 @@ def upload_files(s3, bucket, filelist, params):
     ret = []
     for entry in filelist:
         args = {
-          'ContentLength': entry['bytes'],
           'ContentType': entry['mime_type']
         }
         if params.get('permission'):
             args['ACL'] = params['permission']
-        s3.upload_file(entry['fullpath'], bucket, entry['s3_path'], ExtraArgs=None, Callback=None, Config=None)
+        s3.upload_file(entry['fullpath'], bucket, entry['s3_path'], ExtraArgs=args, Callback=None, Config=None)
         ret.append(entry)
     return ret