diff --git a/parser/src/main/java/org/dna/mqtt/moquette/proto/UnsubscribeDecoder.java b/parser/src/main/java/org/dna/mqtt/moquette/proto/UnsubscribeDecoder.java
index 7cd85df2..6fa8f028 100644
--- a/parser/src/main/java/org/dna/mqtt/moquette/proto/UnsubscribeDecoder.java
+++ b/parser/src/main/java/org/dna/mqtt/moquette/proto/UnsubscribeDecoder.java
@@ -1,13 +1,11 @@
 package org.dna.mqtt.moquette.proto;
 
-import java.io.UnsupportedEncodingException;
 import org.apache.mina.core.buffer.IoBuffer;
 import org.apache.mina.core.session.IoSession;
 import org.apache.mina.filter.codec.ProtocolDecoderOutput;
 import org.apache.mina.filter.codec.demux.MessageDecoderResult;
 import org.dna.mqtt.moquette.proto.messages.AbstractMessage;
 import org.dna.mqtt.moquette.proto.messages.AbstractMessage.QOSType;
-import org.dna.mqtt.moquette.proto.messages.SubscribeMessage;
 import org.dna.mqtt.moquette.proto.messages.UnsubscribeMessage;
 
 /**