diff --git a/README.md b/README.md
index 4af8d06..6a86e65 100644
--- a/README.md
+++ b/README.md
@@ -65,3 +65,4 @@ SUBCOMMANDS:
 
 Scootaloo does not respect the spam limits imposed by Mastodon: it will make a 429 error if too much Tweets are converted to Toots in a short amount of time (and it will not recover from it). By default, it gets the last 200 tweets from the user timeline (which is a lot!). It is recommended to put a Tweet number into the `last_tweet` file before copying an old account.
 
+Oh and everything is sync (and not async) so this does not run at a blazing speed…