2 files changed, 2 insertions, 2 deletions
diff --git a/packages/instant/src/util/asset.ts b/packages/instant/src/util/asset.ts
index ebeba948e..e42727d84 100644
--- a/packages/instant/src/util/asset.ts
+++ b/packages/instant/src/util/asset.ts
@@ -2,7 +2,7 @@ import { AssetProxyId, ObjectMap } from '@0x/types';
 import * as _ from 'lodash';
 
 import { assetDataNetworkMapping } from '../data/asset_data_network_mapping';
-import { Asset, AssetMetaData, Network, ZeroExInstantError, ERC20Asset } from '../types';
+import { Asset, AssetMetaData, ERC20Asset, Network, ZeroExInstantError } from '../types';
 
 export const assetUtils = {
     createAssetFromAssetData: (
diff --git a/packages/instant/src/util/big_number.ts b/packages/instant/src/util/big_number.ts
index 773eb0cb4..a34d22d76 100644
--- a/packages/instant/src/util/big_number.ts
+++ b/packages/instant/src/util/big_number.ts
@@ -9,7 +9,7 @@ import * as _ from 'lodash';
  *  new BigNumberInput(1..) => still throws
  */
 export class BigNumberInput extends BigNumber {
-    private _hasDecimalPeriod: boolean;
+    private readonly _hasDecimalPeriod: boolean;
     constructor(bigNumberString: string) {
         const hasDecimalPeriod = _.endsWith(bigNumberString, '.');
         let internalString = bigNumberString;