From 353abffba9afd73d70fce47fee2f2d6067c6c8ae Mon Sep 17 00:00:00 2001
From: Leonid Logvinov <logvinov.leon@gmail.com>
Date: Tue, 28 Nov 2017 12:23:41 -0600
Subject: Improve the comment

---
 packages/0x.js/src/contract.ts | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

(limited to 'packages/0x.js/src')

diff --git a/packages/0x.js/src/contract.ts b/packages/0x.js/src/contract.ts
index 872f18b2a..a4ee03910 100644
--- a/packages/0x.js/src/contract.ts
+++ b/packages/0x.js/src/contract.ts
@@ -5,7 +5,9 @@ import * as Web3 from 'web3';
 
 import {AbiType} from './types';
 
-const GAS_MARGIN = 300000;
+// HACK: Gas estimates on testrpc don't take into account gas refunds.
+// Our calls can trigger max 8 gas refunds for SSTORE per transaction for 15k gas each which gives 120k.
+const GAS_MARGIN = 120000;
 
 export class Contract implements Web3.ContractInstance {
     public address: string;
-- 
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