diff --git a/dist/angular-post-message.js b/dist/angular-post-message.js
index aeb6e55..7b6dc12 100644
--- a/dist/angular-post-message.js
+++ b/dist/angular-post-message.js
@@ -1,5 +1,5 @@
 /*!
-* angular-post-message v1.1.1
+* angular-post-message2 v1.1.2
 * Copyright 2015 Kyle Welsby <kyle@mekyle.com>
 * Licensed under The MIT License
 */
@@ -16,6 +16,9 @@
           '$scope', function($scope) {
             return $scope.$on('$messageOutgoing', function(event, message, domain) {
               var sender;
+              if (domain == null) {
+                domain = "*";
+              }
               sender = $scope.sender || $window.parent;
               return sender.postMessage(message, domain);
             });
diff --git a/dist/angular-post-message.min.js b/dist/angular-post-message.min.js
index 9eeeb02..d80ac41 100644
--- a/dist/angular-post-message.min.js
+++ b/dist/angular-post-message.min.js
@@ -1,6 +1,6 @@
 /*!
-* angular-post-message v1.1.1
+* angular-post-message2 v1.1.2
 * Copyright 2015 Kyle Welsby <kyle@mekyle.com>
 * Licensed under The MIT License
 */
-(function(){var a;a=angular.module("ngPostMessage",["ng"]),a.directive("html",["$window","$postMessage",function(a,b){return{restrict:"E",controller:["$scope",function(b){return b.$on("$messageOutgoing",function(c,d,e){var f;return f=b.sender||a.parent,f.postMessage(d,e)})}],link:function(c){return c.sendMessageToService=function(a){var d,e;if(a=a.originalEvent||a,a&&a.data){e=null,c.sender=a.source;try{e=angular.fromJson(a.data)}catch(f){d=f,console.error("ahem",d),e=a.data}return c.$root.$broadcast("$messageIncoming",e),b.messages(e)}},angular.element(a).bind("message",c.sendMessageToService)}}}]),a.factory("$postMessage",["$rootScope",function(a){var b,c;return b=[],c={messages:function(c){return c&&(b.push(c),a.$digest()),b},lastMessage:function(){return b[b.length-1]},post:function(b,c){return null==c&&(c="*"),a.$broadcast("$messageOutgoing",b,c)}}}])}).call(this);
\ No newline at end of file
+(function(){var a;a=angular.module("ngPostMessage",["ng"]),a.directive("html",["$window","$postMessage",function(a,b){return{restrict:"E",controller:["$scope",function(b){return b.$on("$messageOutgoing",function(c,d,e){var f;return null==e&&(e="*"),f=b.sender||a.parent,f.postMessage(d,e)})}],link:function(c){return c.sendMessageToService=function(a){var d,e;if(a=a.originalEvent||a,a&&a.data){e=null,c.sender=a.source;try{e=angular.fromJson(a.data)}catch(f){d=f,console.error("ahem",d),e=a.data}return c.$root.$broadcast("$messageIncoming",e),b.messages(e)}},angular.element(a).bind("message",c.sendMessageToService)}}}]),a.factory("$postMessage",["$rootScope",function(a){var b,c;return b=[],c={messages:function(c){return c&&(b.push(c),a.$digest()),b},lastMessage:function(){return b[b.length-1]},post:function(b,c){return null==c&&(c="*"),a.$broadcast("$messageOutgoing",b,c)}}}])}).call(this);
\ No newline at end of file
diff --git a/src/angular-post-message.coffee b/src/angular-post-message.coffee
index e25654f..511d1af 100644
--- a/src/angular-post-message.coffee
+++ b/src/angular-post-message.coffee
@@ -4,7 +4,7 @@ app.directive('html',['$window','$postMessage',($window,$postMessage)->
   {
     restrict: 'E'
     controller: (['$scope',($scope)->
-      $scope.$on('$messageOutgoing',(event,message,domain)->
+      $scope.$on('$messageOutgoing',(event,message,domain="*")->
         sender = $scope.sender || $window.parent
         sender.postMessage(message,domain)
       )