diff --git a/contracts/src/Gateway.sol b/contracts/src/Gateway.sol
index e50f31d8e5..9a3e90cd3f 100644
--- a/contracts/src/Gateway.sol
+++ b/contracts/src/Gateway.sol
@@ -630,7 +630,7 @@ contract Gateway is IGateway, IInitializable {
         Weight calldata weightAtMost,
         bytes calldata call
     ) external payable {
-        if (call.length == 0 || destinationFee == 0 || weightAtMost.refTime == 0 || weightAtMost.proofSize == 0) {
+        if (call.length < 2 || destinationFee == 0 || weightAtMost.refTime == 0 || weightAtMost.proofSize == 0) {
             revert InvalidTransact();
         }
         Ticket memory ticket;