diff --git a/readme.md b/readme.md
index d73514e..94bcddb 100644
--- a/readme.md
+++ b/readme.md
@@ -133,7 +133,7 @@ You can use this to collect statistics about your backups.
 An easy way would be to use a [Slack hook](https://api.slack.com/incoming-webhooks) and send it like this:
 
 ```sh
-ghbackup -secret $GITHUB_TOKEN DIR \
+ghbackup -secret $GITHUB_TOKEN $DIR \
   | tail -n1 \
   | xargs -I%% curl -s -X POST --data-urlencode 'payload={"text": "%%"}' $SLACK_HOOK
 ```