diff --git a/src/test/java/io/vertx/core/eventbus/LocalEventBusTest.java b/src/test/java/io/vertx/core/eventbus/LocalEventBusTest.java
index bc1f67241..156a4a6dd 100644
--- a/src/test/java/io/vertx/core/eventbus/LocalEventBusTest.java
+++ b/src/test/java/io/vertx/core/eventbus/LocalEventBusTest.java
@@ -25,9 +25,7 @@ import io.vertx.test.core.TestUtils;
 import org.junit.Test;
 
 import java.util.*;
-import java.util.concurrent.ConcurrentHashMap;
-import java.util.concurrent.CountDownLatch;
-import java.util.concurrent.TimeUnit;
+import java.util.concurrent.*;
 import java.util.concurrent.atomic.AtomicBoolean;
 import java.util.concurrent.atomic.AtomicInteger;
 import java.util.function.BiFunction;