diff --git a/infrastructure/playbooks/kerberos_trust_setup.yml b/infrastructure/playbooks/kerberos_trust_setup.yml
index 1d7bc81..2ff79bd 100644
--- a/infrastructure/playbooks/kerberos_trust_setup.yml
+++ b/infrastructure/playbooks/kerberos_trust_setup.yml
@@ -175,7 +175,7 @@
 
     - name: Set fact — inter-realm krbtgt user already present
       ansible.builtin.set_fact:
-        _trust_exists: "{{ ('krbtgt/' + trust_realm) in _samba_users.stdout }}"
+        _trust_exists: "{{ samba_account_name in _samba_users.stdout }}"
 
     - name: Report trust pre-existence
       ansible.builtin.debug: