diff --git a/contracts/Gateway.sol b/contracts/Gateway.sol
index 88ab722..cf0c217 100644
--- a/contracts/Gateway.sol
+++ b/contracts/Gateway.sol
@@ -203,8 +203,10 @@ contract Gateway is IGateway, GatewaySettingManager, PausableUpgradeable {
 		require(!order[_orderId].isRefunded, 'OrderRefunded');
 		require(order[_orderId].protocolFee >= _fee, 'FeeExceedsProtocolFee');
 
-		// transfer refund fee to the treasury
-		IERC20(order[_orderId].token).transfer(treasuryAddress, _fee);
+		if (_fee > 0) {
+			// transfer refund fee to the treasury
+			IERC20(order[_orderId].token).transfer(treasuryAddress, _fee);
+		}
 
 		// reset state values
 		order[_orderId].isRefunded = true;