diff --git a/src/signature.js b/src/signature.js
index 3aae748..be050e4 100644
--- a/src/signature.js
+++ b/src/signature.js
@@ -9,7 +9,8 @@ angular.module('signature').directive('signaturePad', ['$interval', '$timeout',
   function ($interval, $timeout, $window) {
     'use strict';
 
-    var signaturePad, element, EMPTY_IMAGE = 'data:image/gif;base64,R0lGODlhAQABAAAAACwAAAAAAQABAAA=';
+    var signaturePad, element, EMPTY_IMAGE = 'data:image/png;base64,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';
+
     return {
       restrict: 'EA',
       replace: true,