diff --git a/src/chain/ERC20Reactor.ts b/src/chain/ERC20Reactor.ts
index fa4aea5..e20645a 100644
--- a/src/chain/ERC20Reactor.ts
+++ b/src/chain/ERC20Reactor.ts
@@ -148,8 +148,8 @@ export class ERC20Reactor {
     }
     let gasEstimate =
       from === this.account.address
-        ? await contract.methods.transfer(to, 0).estimateGas()
-        : await contract.methods.transferFrom(from, to, 0).estimateGas()
+        ? await contract.methods.transfer(to, amountBN).estimateGas()
+        : await contract.methods.transferFrom(from, to, amountBN).estimateGas()
     if (estimate) {
       return gasEstimate
     }