diff --git a/netty_parser/src/main/java/org/dna/mqtt/moquette/parser/netty/MQTTDecoder.java b/netty_parser/src/main/java/org/dna/mqtt/moquette/parser/netty/MQTTDecoder.java
index 79d74027..804feb1f 100644
--- a/netty_parser/src/main/java/org/dna/mqtt/moquette/parser/netty/MQTTDecoder.java
+++ b/netty_parser/src/main/java/org/dna/mqtt/moquette/parser/netty/MQTTDecoder.java
@@ -28,6 +28,7 @@ public class MQTTDecoder extends ByteToMessageDecoder {
        m_decoderMap.put(AbstractMessage.DISCONNECT, new DisconnectDecoder());
        m_decoderMap.put(AbstractMessage.PINGREQ, new PingReqDecoder());
        m_decoderMap.put(AbstractMessage.PINGRESP, new PingRespDecoder());
+       m_decoderMap.put(AbstractMessage.UNSUBACK, new UnsubAckDecoder());
     }
 
     @Override
diff --git a/netty_parser/src/main/java/org/dna/mqtt/moquette/parser/netty/MQTTEncoder.java b/netty_parser/src/main/java/org/dna/mqtt/moquette/parser/netty/MQTTEncoder.java
index aea7e3d6..6d165fc9 100644
--- a/netty_parser/src/main/java/org/dna/mqtt/moquette/parser/netty/MQTTEncoder.java
+++ b/netty_parser/src/main/java/org/dna/mqtt/moquette/parser/netty/MQTTEncoder.java
@@ -27,6 +27,7 @@ public class MQTTEncoder extends MessageToByteEncoder<AbstractMessage> {
        m_encoderMap.put(AbstractMessage.DISCONNECT, new DisconnectEncoder());
        m_encoderMap.put(AbstractMessage.PINGREQ, new PingReqEncoder());
        m_encoderMap.put(AbstractMessage.PINGRESP, new PingRespEncoder());
+       m_encoderMap.put(AbstractMessage.UNSUBACK, new UnsubAckEncoder());
     }
     
     @Override
diff --git a/netty_parser/src/main/java/org/dna/mqtt/moquette/parser/netty/UnsubAckDecoder.java b/netty_parser/src/main/java/org/dna/mqtt/moquette/parser/netty/UnsubAckDecoder.java
new file mode 100644
index 00000000..d0a73217
--- /dev/null
+++ b/netty_parser/src/main/java/org/dna/mqtt/moquette/parser/netty/UnsubAckDecoder.java
@@ -0,0 +1,17 @@
+package org.dna.mqtt.moquette.parser.netty;
+
+import org.dna.mqtt.moquette.proto.messages.MessageIDMessage;
+import org.dna.mqtt.moquette.proto.messages.UnsubAckMessage;
+
+/**
+ *
+ * @author andrea
+ */
+class UnsubAckDecoder extends MessageIDDecoder {
+
+    @Override
+    protected MessageIDMessage createMessage() {
+        return new UnsubAckMessage();
+    }
+}
+
diff --git a/netty_parser/src/main/java/org/dna/mqtt/moquette/parser/netty/UnsubAckEncoder.java b/netty_parser/src/main/java/org/dna/mqtt/moquette/parser/netty/UnsubAckEncoder.java
new file mode 100644
index 00000000..0f0d879b
--- /dev/null
+++ b/netty_parser/src/main/java/org/dna/mqtt/moquette/parser/netty/UnsubAckEncoder.java
@@ -0,0 +1,20 @@
+package org.dna.mqtt.moquette.parser.netty;
+
+import io.netty.buffer.ByteBuf;
+import io.netty.channel.ChannelHandlerContext;
+import org.dna.mqtt.moquette.proto.messages.AbstractMessage;
+import org.dna.mqtt.moquette.proto.messages.UnsubAckMessage;
+
+/**
+ *
+ * @author andrea
+ */
+class UnsubAckEncoder extends DemuxEncoder<UnsubAckMessage> {
+    
+    @Override
+    protected void encode(ChannelHandlerContext chc, UnsubAckMessage msg, ByteBuf out) {
+        out.writeByte(AbstractMessage.UNSUBACK << 4).
+                writeBytes(Utils.encodeRemainingLength(2)).
+                writeShort(msg.getMessageID());
+    }
+}
\ No newline at end of file