diff --git a/bls-demo.js b/bls-demo.js
index 289f147..fa5db3f 100644
--- a/bls-demo.js
+++ b/bls-demo.js
@@ -1,9 +1,3 @@
-// Get random source
-const crypto = window.crypto || window.msCrypto
-const getRandomValues = x => crypto.getRandomValues(x)
-// Setup BLS
-const bls = blsSetupFactory(createBlsModule, getRandomValues)
-
 function getValue (name) { return document.getElementsByName(name)[0].value }
 function setValue (name, val) { document.getElementsByName(name)[0].value = val }
 function getText (name) { return document.getElementsByName(name)[0].innerText }
diff --git a/bls.js b/bls.js
index 9e89968..9ed6747 100644
--- a/bls.js
+++ b/bls.js
@@ -665,4 +665,7 @@ if (typeof exports === 'object' && typeof module === 'object') {
 // Browser export
 if (typeof window === 'object') {
   window.blsSetupFactory = blsSetupFactory
+  const crypto = window.crypto || window.msCrypto
+  const getRandomValues = x => crypto.getRandomValues(x)
+  bls = blsSetupFactory(createBlsModule, getRandomValues)
 }
diff --git a/readme.md b/readme.md
index 8f7c5cf..79304c4 100644
--- a/readme.md
+++ b/readme.md
@@ -5,8 +5,6 @@
 This module is built with `BLS_ETH=1` for Ethereum 2.0 spec.
 
 # News
-- 2020/Nov/04 : break backward compatibility (bls.js is renamed to index.js)
-  - use blsSetupFactory to make bls instance on browser (see the top of bls-demo.js)
 - 2020/Oct/01 : add `bls.multiVerify` to verify all {sigs, pubs, msgs}.
 - 2020/Jul/06 ; `setETHmode(bls.ETH_MODE_DRAFT_07)` is default mode
 - 2020/May/19 : Call `bls.setETHmode(bls.ETH_MODE_DRAFT_07)` once after `bls.init()` for `BLS_ETH_MODE_DRAFT_07` defined at [BLS12381G2_XMD:SHA-256_SSWU_RO_](https://www.ietf.org/id/draft-irtf-cfrg-hash-to-curve-07.html#name-bls12381g2_xmdsha-256_sswu_).