diff --git a/src/js/controllers/buyBitcoindotcom.js b/src/js/controllers/buyBitcoindotcom.js
index 741898c34..64766eede 100644
--- a/src/js/controllers/buyBitcoindotcom.js
+++ b/src/js/controllers/buyBitcoindotcom.js
@@ -1,7 +1,9 @@
 'use strict';
 
 angular.module('copayApp.controllers').controller('buyBitcoindotcomController',
-  function($scope, $timeout, $ionicModal, $log, $state, $ionicHistory, lodash, bitcoincomService, externalLinkService, popupService) {
+  function($scope, platformInfo, externalLinkService) {
+
+    $scope.os = platformInfo.isAndroid ? 'android' : platformInfo.isIOS ? 'ios' : 'desktop';
 
     $scope.openExternalLink = function(url) {
       externalLinkService.open(url);
diff --git a/www/views/buyBitcoindotcom.html b/www/views/buyBitcoindotcom.html
index a8a7889e3..f0f8e27e3 100644
--- a/www/views/buyBitcoindotcom.html
+++ b/www/views/buyBitcoindotcom.html
@@ -15,7 +15,7 @@
       </div>
       <div class="item item-divider"></div>
       <div class="bitcoin-com-page-body">
-        <button class="button button-standard button-secondary" ng-click="openExternalLink('https://buy.bitcoin.com/?utm_source=WalletApp&utm_medium=iOS&utm_campaign=BuyBitcoin')">Buy bitcoin</button>
+        <button class="button button-standard button-secondary" ng-click="openExternalLink('https://buy.bitcoin.com/?utm_source=WalletApp&utm_medium=' + os + '&utm_campaign=BuyBitcoin')">Buy bitcoin</button>
       </div>
     </div>
   </ion-content>