diff --git a/web3.js/src/publickey.js b/web3.js/src/publickey.js
index 9af5f9c499..9003b86ccf 100644
--- a/web3.js/src/publickey.js
+++ b/web3.js/src/publickey.js
@@ -56,7 +56,7 @@ export class PublicKey {
     }
 
     const zeroPad = new Buffer(32);
-    b.copy(zeroPad, 32 - b.length);
+    b.copy(zeroPad);
     return zeroPad;
   }
 
diff --git a/web3.js/test/publickey.test.js b/web3.js/test/publickey.test.js
index dd1d5f7732..6ec4d2f754 100644
--- a/web3.js/test/publickey.test.js
+++ b/web3.js/test/publickey.test.js
@@ -37,6 +37,10 @@ test('isPublicKey', () => {
 test('toBase58', () => {
   const key = new PublicKey('0x300000000000000000000000000000000000000000000000000000000000000');
   expect(key.toBase58()).toBe('CiDwVBFgWV9E5MvXWoLgnEgn2hK7rJikbvfWavzAQz3');
+
+  const key2 = new PublicKey('123456789');
+  expect(key2.toBase58()).toBe('Vj3WURvtMv1mii1vhTqLhcSwVWDRs2E135KtTYUXtTq');
+  console.log(key2.toBuffer());
 });
 
 test('toBuffer', () => {