diff --git a/src/Message/UnSubAck.php b/src/Message/UnSubAck.php
index 95a7238..7939b03 100644
--- a/src/Message/UnSubAck.php
+++ b/src/Message/UnSubAck.php
@@ -13,7 +13,6 @@
 
 namespace Simps\MQTT\Message;
 
-use Simps\MQTT\Hex\ReasonCode;
 use Simps\MQTT\Protocol\Types;
 use Simps\MQTT\Protocol\V3;
 use Simps\MQTT\Protocol\V5;