1 files changed, 2 insertions, 2 deletions
diff --git a/packages/contracts/test/utils/order_factory.ts b/packages/contracts/test/utils/order_factory.ts
index 009dbc396..da418fa0f 100644
--- a/packages/contracts/test/utils/order_factory.ts
+++ b/packages/contracts/test/utils/order_factory.ts
@@ -6,8 +6,8 @@ import { constants } from './constants';
 import { signingUtils } from './signing_utils';
 
 export class OrderFactory {
-    private _defaultOrderParams: Partial<Order>;
-    private _privateKey: Buffer;
+    private readonly _defaultOrderParams: Partial<Order>;
+    private readonly _privateKey: Buffer;
     constructor(privateKey: Buffer, defaultOrderParams: Partial<Order>) {
         this._defaultOrderParams = defaultOrderParams;
         this._privateKey = privateKey;