diff --git a/acme4j-utils/src/test/java/org/shredzone/acme4j/util/CSRBuilderTest.java b/acme4j-utils/src/test/java/org/shredzone/acme4j/util/CSRBuilderTest.java
index ebd5eba7..e627a9b1 100644
--- a/acme4j-utils/src/test/java/org/shredzone/acme4j/util/CSRBuilderTest.java
+++ b/acme4j-utils/src/test/java/org/shredzone/acme4j/util/CSRBuilderTest.java
@@ -13,8 +13,9 @@
  */
 package org.shredzone.acme4j.util;
 
+import static org.hamcrest.MatcherAssert.assertThat;
 import static org.hamcrest.Matchers.*;
-import static org.junit.Assert.*;
+import static org.junit.Assert.fail;
 
 import java.io.ByteArrayOutputStream;
 import java.io.IOException;