diff --git a/CHANGELOG b/CHANGELOG
index 11b3d44..edcb2d0 100644
--- a/CHANGELOG
+++ b/CHANGELOG
@@ -1,3 +1,6 @@
+February 2018
+  1.4.3 protocol-dependent header message support
+
 January 2018
   1.4.2 checking entered terminal and PIN key values to be [^a-fA-F0-9]
 
diff --git a/package.json b/package.json
index b87cace..3e00099 100644
--- a/package.json
+++ b/package.json
@@ -1,7 +1,7 @@
 {
   "name": "electron-atm",
   "productName": "Electron ATM",
-  "version": "1.4.2",
+  "version": "1.4.3",
   "description": "A simple APTRA Advance NDC ATM emulator",
   "main": "main.js",
   "scripts": {
diff --git a/src/controllers/builder.js b/src/controllers/builder.js
index 9b34f1f..66dfde4 100644
--- a/src/controllers/builder.js
+++ b/src/controllers/builder.js
@@ -1,6 +1,7 @@
 class Builder{
-  constructor(luno = '000'){
+  constructor(luno = '000', header = ''){
     this.luno = luno;
+    this.header = header;
   }
 
   /**
@@ -105,7 +106,7 @@ class Builder{
    * @return {[type]}        [description]
    */
   build(object){
-    let message = '';
+    let message = this.header;
 
     if(!object)
       return null;
diff --git a/src/listeners/builder.js b/src/listeners/builder.js
index b3a9cef..e739ef7 100644
--- a/src/listeners/builder.js
+++ b/src/listeners/builder.js
@@ -10,7 +10,12 @@ if(host && host.luno)
 else
   luno = '000';
 
-let builder = new Builder(luno);
+if(host && host.header)
+  header = host.header;
+else
+  header = '';
+
+let builder = new Builder(luno, header);
 
 ipc.on('build-message-to-host', (event, message) => {
   var built = builder.build(message);
diff --git a/src/listeners/settings.js b/src/listeners/settings.js
index 356ca77..6f8753e 100644
--- a/src/listeners/settings.js
+++ b/src/listeners/settings.js
@@ -7,6 +7,7 @@ $(function(){
     $('#settings-atm-host').val(host.ip);
     $('#settings-atm-port').val(host.port);
     $('#settings-luno').val(host.luno);
+    $('#settings-header').val(host.header);
   }
 
   let keys = {};
@@ -76,7 +77,8 @@ $(function(){
     var host = {
       ip: $('#settings-atm-host').val(),
       port: $('#settings-atm-port').val(),
-      luno: $('#settings-luno').val()
+      luno: $('#settings-luno').val(),
+      header: $('#settings-header').val()
     };
     settings.set('host', host);