1 files changed, 1 insertions, 1 deletions
diff --git a/src/contract_wrappers/ether_token_wrapper.ts b/src/contract_wrappers/ether_token_wrapper.ts
index eae84feec..3c282510f 100644
--- a/src/contract_wrappers/ether_token_wrapper.ts
+++ b/src/contract_wrappers/ether_token_wrapper.ts
@@ -13,7 +13,7 @@ import * as EtherTokenArtifacts from '../artifacts/EtherToken.json';
 export class EtherTokenWrapper extends ContractWrapper {
     private _etherTokenContractIfExists?: EtherTokenContract;
     private _tokenWrapper: TokenWrapper;
-    constructor(web3Wrapper: Web3Wrapper, tokenWrapper: TokenWrapper, gasPrice: BigNumber.BigNumber) {
+    constructor(web3Wrapper: Web3Wrapper, tokenWrapper: TokenWrapper, gasPrice?: BigNumber.BigNumber) {
         super(web3Wrapper, gasPrice);
         this._tokenWrapper = tokenWrapper;
     }