diff --git a/ipatests/test_integration/test_trust.py b/ipatests/test_integration/test_trust.py
index a58e27af0c4..0634badbb6a 100644
--- a/ipatests/test_integration/test_trust.py
+++ b/ipatests/test_integration/test_trust.py
@@ -944,12 +944,12 @@ def test_server_option_with_unreachable_ad(self):
             ['chown', '--reference', paths.NAMED_CONF, ad_zone_file])
         named_conf = self.master.get_file_contents(paths.NAMED_CONF,
                                                    encoding='utf-8')
-        named_conf += textwrap.dedent('''
-            zone "ad.test" {{
+        named_conf += textwrap.dedent(f'''
+            zone "{self.ad.domain.name}" {{
                 type master;
-                file "{}";
+                file "{ad_zone_file}";
             }};
-        '''.format(ad_zone_file))
+        ''')
         self.master.put_file_contents(paths.NAMED_CONF, named_conf)
         tasks.restart_named(self.master)
         try: