diff --git a/plugins/synced_folders/rsync/helper.rb b/plugins/synced_folders/rsync/helper.rb
index e3b0ef90b..3d24cb693 100644
--- a/plugins/synced_folders/rsync/helper.rb
+++ b/plugins/synced_folders/rsync/helper.rb
@@ -108,6 +108,7 @@ module VagrantPlugins
           ssh_config_file,
           control_options,
         ]
+        rsh += ssh_info[:extra_args]
 
         # Solaris/OpenSolaris/Illumos uses SunSSH which doesn't support the
         # IdentitiesOnly option. Also, we don't enable it if keys_only is false