diff --git a/acme4j-example/src/main/java/org/shredzone/acme4j/ClientTest.java b/acme4j-example/src/main/java/org/shredzone/acme4j/ClientTest.java
index cb2efd24..e93d9e7f 100644
--- a/acme4j-example/src/main/java/org/shredzone/acme4j/ClientTest.java
+++ b/acme4j-example/src/main/java/org/shredzone/acme4j/ClientTest.java
@@ -204,6 +204,11 @@ public class ClientTest {
     private void authorize(Authorization auth) throws AcmeException {
         LOG.info("Authorization for domain " + auth.getDomain());
 
+        // The authorization is already valid. No need to process a challenge.
+        if (auth.getStatus() == Status.VALID) {
+            return;
+        }
+
         // Find the desired challenge and prepare it.
         Challenge challenge = null;
         switch (CHALLENGE_TYPE) {
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 ca3d199d..1d372cdb 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
@@ -122,6 +122,10 @@ public class OrderIT extends PebbleITBase {
             assertThat(auth.getDomain(), is(domain));
             assertThat(auth.getStatus(), is(Status.PENDING));
 
+            if (auth.getStatus() == Status.VALID) {
+                continue;
+            }
+
             Challenge challenge = validator.prepare(auth);
             challenge.trigger();
 
diff --git a/acme4j-it/src/test/java/org/shredzone/acme4j/it/pebble/OrderWildcardIT.java b/acme4j-it/src/test/java/org/shredzone/acme4j/it/pebble/OrderWildcardIT.java
index 9142e3fe..6a8702a7 100644
--- a/acme4j-it/src/test/java/org/shredzone/acme4j/it/pebble/OrderWildcardIT.java
+++ b/acme4j-it/src/test/java/org/shredzone/acme4j/it/pebble/OrderWildcardIT.java
@@ -80,6 +80,10 @@ public class OrderWildcardIT extends PebbleITBase {
             assertThat(auth.getDomain(), is(TEST_DOMAIN));
             assertThat(auth.getStatus(), is(Status.PENDING));
 
+            if (auth.getStatus() == Status.VALID) {
+                continue;
+            }
+
             Dns01Challenge challenge = auth.findChallenge(Dns01Challenge.TYPE);
             assertThat(challenge, is(notNullValue()));