diff --git a/lib/mqtt_msg.c b/lib/mqtt_msg.c
index a9b76b4..1ee803c 100644
--- a/lib/mqtt_msg.c
+++ b/lib/mqtt_msg.c
@@ -329,6 +329,7 @@ uint16_t mqtt_get_id(uint8_t* buffer, uint16_t length)
         case MQTT_MSG_TYPE_SUBACK:
         case MQTT_MSG_TYPE_UNSUBACK:
         case MQTT_MSG_TYPE_SUBSCRIBE:
+        case MQTT_MSG_TYPE_UNSUBSCRIBE:
             {
                 // This requires the remaining length to be encoded in 1 byte,
                 // which it should be.