diff --git a/foundry/src/executors/TokenTransfer.sol b/foundry/src/executors/TokenTransfer.sol
index 05e296a..6eac1c0 100644
--- a/foundry/src/executors/TokenTransfer.sol
+++ b/foundry/src/executors/TokenTransfer.sol
@@ -6,6 +6,7 @@ import "@openzeppelin/contracts/token/ERC20/utils/SafeERC20.sol";
 import "@permit2/src/interfaces/IAllowanceTransfer.sol";
 
 error TokenTransfer__AddressZero();
+error TokenTransfer__InvalidTransferType();
 
 contract TokenTransfer {
     using SafeERC20 for IERC20;
@@ -67,6 +68,8 @@ contract TokenTransfer {
             permit2.transferFrom(
                 sender, address(this), uint160(amount), tokenIn
             );
+        } else {
+            revert TokenTransfer__InvalidTransferType();
         }
     }
 }