diff --git a/acme4j-client/src/test/java/org/shredzone/acme4j/exception/AcmeRetryAfterExceptionTest.java b/acme4j-client/src/test/java/org/shredzone/acme4j/exception/AcmeRetryAfterExceptionTest.java
index dd020091..be91983a 100644
--- a/acme4j-client/src/test/java/org/shredzone/acme4j/exception/AcmeRetryAfterExceptionTest.java
+++ b/acme4j-client/src/test/java/org/shredzone/acme4j/exception/AcmeRetryAfterExceptionTest.java
@@ -57,8 +57,8 @@ public class AcmeRetryAfterExceptionTest {
      * Test that date is required.
      */
     @Test(expected = NullPointerException.class)
-    public void testRequiredAcmeRetryAfterException() {
-        new AcmeRetryAfterException("null-test", null);
+    public void testRequiredAcmeRetryAfterException() throws AcmeException {
+        throw new AcmeRetryAfterException("null-test", null);
     }
 
 }