diff --git a/common/src/main/java/io/netty/util/concurrent/DefaultFutureListeners.java b/common/src/main/java/io/netty/util/concurrent/DefaultFutureListeners.java
index c51da72c30..9d895006d3 100644
--- a/common/src/main/java/io/netty/util/concurrent/DefaultFutureListeners.java
+++ b/common/src/main/java/io/netty/util/concurrent/DefaultFutureListeners.java
@@ -17,7 +17,7 @@ package io.netty.util.concurrent;
 
 import java.util.Arrays;
 
-public final class DefaultFutureListeners {
+final class DefaultFutureListeners {
 
     private GenericFutureListener<? extends Future<?>>[] listeners;
     private int size;