diff --git a/PubSubClient/PubSubClient.cpp b/PubSubClient/PubSubClient.cpp
index 55c35ca..91f0a00 100755
--- a/PubSubClient/PubSubClient.cpp
+++ b/PubSubClient/PubSubClient.cpp
@@ -290,7 +290,6 @@ boolean PubSubClient::write(uint8_t header, uint8_t* buf, uint16_t length) {
    return (rc == 1+llen+length);
 }
 
-
 boolean PubSubClient::subscribe(char* topic) {
    if (connected()) {
       // Leave room in the buffer for header and variable length field
@@ -308,6 +307,21 @@ boolean PubSubClient::subscribe(char* topic) {
    return false;
 }
 
+boolean PubSubClient::unsubscribe(char* topic) {
+   if (connected()) {
+      uint16_t length = 5;
+      nextMsgId++;
+      if (nextMsgId == 0) {
+         nextMsgId = 1;
+      }
+      buffer[length++] = (nextMsgId >> 8);
+      buffer[length++] = (nextMsgId & 0xFF);
+      length = writeString(topic, buffer,length);
+      return write(MQTTUNSUBSCRIBE|MQTTQOS1,buffer,length-5);
+   }
+   return false;
+}
+
 void PubSubClient::disconnect() {
    buffer[0] = MQTTDISCONNECT;
    buffer[1] = 0;
diff --git a/PubSubClient/PubSubClient.h b/PubSubClient/PubSubClient.h
index 6c60222..dae9615 100755
--- a/PubSubClient/PubSubClient.h
+++ b/PubSubClient/PubSubClient.h
@@ -67,6 +67,7 @@ public:
    boolean publish(char *, uint8_t *, unsigned int, boolean);
    boolean publish_P(char *, uint8_t PROGMEM *, unsigned int, boolean);
    boolean subscribe(char *);
+   boolean unsubscribe(char *);
    boolean loop();
    boolean connected();
 };