diff --git a/bin/build.js b/bin/build.js
index 242c054..e95d97d 100644
--- a/bin/build.js
+++ b/bin/build.js
@@ -40,8 +40,7 @@ function transform(input, outputs) {
 	write(outputs.import, data);
 
 	// esm -> cjs -> minify
-	// data = data.replace('export function hexoid', 'exports.hexoid = function');
-	data = data.replace('export default function', 'module.exports = function');
+	data = data.replace('export function hexoid', 'exports.hexoid = function');
 	write(outputs.require, data);
 
 	if (outputs.types) {
diff --git a/readme.md b/readme.md
index c906796..16e639c 100644
--- a/readme.md
+++ b/readme.md
@@ -21,7 +21,7 @@ $ npm install --save hexoid
 ## Usage
 
 ```js
-import hexoid from 'hexoid';
+import { hexoid } from 'hexoid';
 
 const toID = hexoid();
 // length = 16 (default)
diff --git a/src/index.d.ts b/src/index.d.ts
index 9b03069..94c01dd 100644
--- a/src/index.d.ts
+++ b/src/index.d.ts
@@ -1 +1 @@
-export default function (len?: number): () => string;
+export function hexoid(len?: number): () => string;
diff --git a/src/index.js b/src/index.js
index b5e3fea..097e605 100644
--- a/src/index.js
+++ b/src/index.js
@@ -1,7 +1,7 @@
 var IDX=256, HEX=[];
 while (IDX--) HEX[IDX] = (IDX + 256).toString(16).substring(1);
 
-export default function (len) {
+export function hexoid(len) {
 	len = len || 16;
 	var str='', num=0;
 	return function () {
diff --git a/test/collisions.js b/test/collisions.js
index 45c805e..61191dc 100644
--- a/test/collisions.js
+++ b/test/collisions.js
@@ -1,6 +1,8 @@
 // $ node test/collisions 16 1e7
 const [len=8, cycles] = process.argv.slice(2);
-const hexoid = require('../dist')(len);
+const { hexoid } = require('../dist');
+
+const toUID = hexoid(len);
 const total = cycles ? +cycles : 1e6;
 
 console.log('~> item total:', total.toLocaleString());
@@ -9,7 +11,7 @@ console.log('~> hash length:', len);
 let sentry = new Set();
 let i=0, tmp, duplicates=0;
 for (; i < total; i++) {
-	tmp = hexoid();
+	tmp = toUID();
 	if (sentry.has(tmp)) {
 		duplicates++;
 	} else {
diff --git a/test/index.js b/test/index.js
index a8a5e80..ba099cf 100644
--- a/test/index.js
+++ b/test/index.js
@@ -1,6 +1,6 @@
 import { test } from 'uvu';
 import * as assert from 'uvu/assert';
-import hexoid from '../src/index.js';
+import { hexoid } from '../src/index.js';
 
 test('exports', () => {
 	assert.type(hexoid, 'function', 'exports function');