diff --git a/docs/Running-Mastodon/Administration-guide.md b/docs/Running-Mastodon/Administration-guide.md
index dd69eb303041fcd39eca4479b6b1beef33034c0d..09b0f1df12029509c77fc3ad1069e53e01e31597 100644
--- a/docs/Running-Mastodon/Administration-guide.md
+++ b/docs/Running-Mastodon/Administration-guide.md
@@ -7,7 +7,7 @@ So, you have a working Mastodon instance... now what?
 
 The following rake task:
 
-    rake mastodon:make_admin USERNAME=alice
+    RAILS_ENV=production bundle exec rails mastodon:make_admin USERNAME=alice
 
 Would turn the local user "alice" into an admin.