diff --git a/browser/generate-trusted.sh b/browser/generate-trusted.sh
index a712ead..b726bb8 100755
--- a/browser/generate-trusted.sh
+++ b/browser/generate-trusted.sh
@@ -14,10 +14,20 @@ pushd lib &> /dev/null
 
 sed -i '$s/,$//g' RootCerts.js
 
-echo "module.exports = ["$'\n'"$(cat RootCerts.js)" > RootCerts.js
+echo "var RootCerts = ["$'\n'"$(cat RootCerts.js)" > RootCerts.js
 echo "];" >> RootCerts.js
 
 sed -i 's/^"/+ "/g' RootCerts.js
 sed -i 's/^+ "-----B/"-----B/g' RootCerts.js
 
+cat <<EOF > RootCerts.js
+// Use hash table for efficiency:
+RootCerts = RootCerts.reduce(function(trusted, cert) {
+  cert = cert.replace(/\s+/g, '');
+  trusted[cert] = true;
+  return trusted;
+}, {});
+module.exports = RootCerts;
+EOF
+
 popd &> /dev/null
diff --git a/lib/PayPro.js b/lib/PayPro.js
index 1d972b1..3aa0079 100644
--- a/lib/PayPro.js
+++ b/lib/PayPro.js
@@ -3,14 +3,7 @@ var protobufjs = protobufjs || require('protobufjs/dist/ProtoBuf');
 var Message = Message || require('./Message');
 
 var KJUR = require('jsrsasign');
-var Trusted = require('./RootCerts');
-
-// Use hash table for efficiency:
-Trusted = Trusted.reduce(function(trusted, cert) {
-  cert = cert.replace(/\s+/g, '');
-  trusted[cert] = true;
-  return trusted;
-}, {});
+var RootCerts = require('./RootCerts');
 
 // BIP 70 - payment protocol
 function PayPro() {
@@ -227,7 +220,7 @@ PayPro.prototype.sign = function(key) {
     var trusted = [].concat(pki_data).every(function(cert) {
       var der = cert.toString('hex');
       var pem = KJUR.asn1.ASN1Util.getPEMStringFromHex(der, 'CERTIFICATE');
-      return !!Trusted[pem.replace(/\s+/g, '')];
+      return !!RootCerts[pem.replace(/\s+/g, '')];
     });
 
     if (!trusted) {
@@ -272,7 +265,7 @@ PayPro.prototype.verify = function() {
       var der = cert.toString('hex');
       var pem = KJUR.asn1.ASN1Util.getPEMStringFromHex(der, 'CERTIFICATE');
 
-      if (!Trusted[pem.replace(/\s+/g, '')]) {
+      if (!RootCerts[pem.replace(/\s+/g, '')]) {
         // throw new Error('Unstrusted certificate.');
       }
 
diff --git a/lib/browser/PayPro.js b/lib/browser/PayPro.js
index 524569c..867fdb1 100644
--- a/lib/browser/PayPro.js
+++ b/lib/browser/PayPro.js
@@ -4,14 +4,7 @@ var Key = require('./Key');
 var KJUR = require('./x509');
 var assert = require('assert');
 var PayPro = require('../PayPro');
-var Trusted = require('../RootCerts');
-
-// Use hash table for efficiency:
-Trusted = Trusted.reduce(function(trusted, cert) {
-  cert = cert.replace(/\s+/g, '');
-  trusted[cert] = true;
-  return trusted;
-}, {});
+var RootCerts = require('../RootCerts');
 
 PayPro.sign = function(key) {
   if (this.messageType !== 'PaymentRequest')
@@ -32,7 +25,7 @@ PayPro.sign = function(key) {
     var trusted = [].concat(pki_data).every(function(cert) {
       var der = cert.toString('hex');
       var pem = KJUR.asn1.ASN1Util.getPEMStringFromHex(der, 'CERTIFICATE');
-      return !!Trusted[pem.replace(/\s+/g, '')];
+      return !!RootCerts[pem.replace(/\s+/g, '')];
     });
 
     if (!trusted) {
@@ -82,7 +75,7 @@ PayPro.verify = function() {
       var der = cert.toString('hex');
       var pem = KJUR.asn1.ASN1Util.getPEMStringFromHex(der, 'CERTIFICATE');
 
-      if (!Trusted[pem.replace(/\s+/g, '')]) {
+      if (!RootCerts[pem.replace(/\s+/g, '')]) {
         // throw new Error('Unstrusted certificate.');
       }