1 files changed, 1 insertions, 1 deletions
diff --git a/src/utils/order_validation_utils.ts b/src/utils/order_validation_utils.ts
index 379ff5fdf..6f9cd7b1a 100644
--- a/src/utils/order_validation_utils.ts
+++ b/src/utils/order_validation_utils.ts
@@ -58,7 +58,7 @@ export class OrderValidationUtils {
         if (cancelTakerTokenAmount.eq(0)) {
             throw new Error(ExchangeContractErrs.OrderCancelAmountZero);
         }
-        if (order.takerTokenAmount.minus(unavailableTakerTokenAmount).eq(0)) {
+        if (order.takerTokenAmount.eq(unavailableTakerTokenAmount)) {
             throw new Error(ExchangeContractErrs.OrderAlreadyCancelledOrFilled);
         }
         const currentUnixTimestampSec = utils.getCurrentUnixTimestamp();