diff --git a/roles/mastodon/tasks/system_setup/ruby.yml b/roles/mastodon/tasks/system_setup/ruby.yml
index c4b21ec..2481400 100644
--- a/roles/mastodon/tasks/system_setup/ruby.yml
+++ b/roles/mastodon/tasks/system_setup/ruby.yml
@@ -59,4 +59,4 @@
     when: default_ruby_version is succeeded
 
   become: true
-  become_mastodon_user: "{{ mastodon_user }}"
\ No newline at end of file
+  become_user: "{{ mastodon_user }}"
\ No newline at end of file