diff --git a/cmd/run.go b/cmd/run.go
index 635b9e0..f66a5f3 100644
--- a/cmd/run.go
+++ b/cmd/run.go
@@ -19,6 +19,7 @@ import (
 const (
 	MASTODON_ACCESS_TOKEN        = "MASTODON_ACCESS_TOKEN"
 	MASTODON_SERVER_ADDRESS      = "MASTODON_SERVER_ADDRESS"
+	MASTODON_TOOT_FOOTER         = "MASTODON_TOOT_FOOTER"
 	MASTODON_TOOT_MAX_CHARACTERS = "MASTODON_TOOT_MAX_CHARACTERS"
 	MASTODON_TOOT_VISIBILITY     = "MASTODON_TOOT_VISIBILITY"
 	TELEGRAM_BOT_TOKEN           = "TELEGRAM_BOT_TOKEN"