1 files changed, 1 insertions, 1 deletions
diff --git a/src/contract_wrappers/exchange_wrapper.ts b/src/contract_wrappers/exchange_wrapper.ts
index d7d56c276..ac15faff4 100644
--- a/src/contract_wrappers/exchange_wrapper.ts
+++ b/src/contract_wrappers/exchange_wrapper.ts
@@ -129,7 +129,7 @@ export class ExchangeWrapper extends ContractWrapper {
             throw new Error(FillOrderValidationErrs.FILL_AMOUNT_IS_ZERO);
         }
         if (signedOrder.taker !== constants.NULL_ADDRESS && signedOrder.taker !== senderAddress) {
-            throw new Error(FillOrderValidationErrs.NOT_A_TAKER);
+            throw new Error(FillOrderValidationErrs.TRANSACTION_SENDER_IS_NOT_FILL_ORDER_TAKER);
         }
         if (signedOrder.expirationUnixTimestampSec.lessThan(Date.now() / 1000)) {
             throw new Error(FillOrderValidationErrs.EXPIRED);