diff --git a/acme4j-it/src/test/java/org/shredzone/acme4j/it/pebble/OrderIT.java b/acme4j-it/src/test/java/org/shredzone/acme4j/it/pebble/OrderIT.java
index 3c6bc375..00b9564c 100644
--- a/acme4j-it/src/test/java/org/shredzone/acme4j/it/pebble/OrderIT.java
+++ b/acme4j-it/src/test/java/org/shredzone/acme4j/it/pebble/OrderIT.java
@@ -81,7 +81,7 @@ public class OrderIT extends PebbleITBase {
             Dns01Challenge challenge = auth.findChallenge(Dns01Challenge.TYPE);
             assertThat(challenge, is(notNullValue()));
 
-            String challengeDomainName = "_acme-challenge." + TEST_DOMAIN;
+            String challengeDomainName = "_acme-challenge." + auth.getIdentifier().getDomain();
 
             client.dnsAddTxtRecord(challengeDomainName, challenge.getDigest());