diff --git a/src/migrations/0026_new_admins_group.py b/src/migrations/0026_new_admins_group.py
index a260074fd..3b2207eb8 100644
--- a/src/migrations/0026_new_admins_group.py
+++ b/src/migrations/0026_new_admins_group.py
@@ -54,7 +54,7 @@ class MyMigration(Migration):
             for user in all_users:
                 aliases = user_info(user).get("mail-aliases", [])
                 if any(alias.startswith(f"admin@{main_domain}") for alias in aliases) \
-                  and any(alias.startswith(f"postmaster@{main_domain}") for alias in aliases):
+                  or any(alias.startswith(f"postmaster@{main_domain}") for alias in aliases):
                     new_admin_user = user
                     break