diff --git a/codec-mqtt/src/main/java/io/netty/handler/codec/mqtt/MqttSubscriptionOption.java b/codec-mqtt/src/main/java/io/netty/handler/codec/mqtt/MqttSubscriptionOption.java
index 53ab340da5..8180b29857 100644
--- a/codec-mqtt/src/main/java/io/netty/handler/codec/mqtt/MqttSubscriptionOption.java
+++ b/codec-mqtt/src/main/java/io/netty/handler/codec/mqtt/MqttSubscriptionOption.java
@@ -20,7 +20,7 @@ package io.netty.handler.codec.mqtt;
  */
 public final class MqttSubscriptionOption {
 
-    enum RetainedHandlingPolicy {
+    public enum RetainedHandlingPolicy {
         SEND_AT_SUBSCRIBE(0),
         SEND_AT_SUBSCRIBE_IF_NOT_YET_EXISTS(1),
         DONT_SEND_AT_SUBSCRIBE(2);