diff --git a/.gas-snapshot b/.gas-snapshot
index fde0fadb..3b0e8a8c 100644
--- a/.gas-snapshot
+++ b/.gas-snapshot
@@ -60,8 +60,8 @@ testSafeTransferFromSelf() (gas: 59828)
 testFailMintToWrongReturnDataERC155Recipient() (gas: 263102)
 testInfiniteApproveTransferFrom() (gas: 387818)
 testApprove() (gas: 26558)
-testMetaData() (gas: 6922)
-testTransferFrom() (gas: 388156)
+testMetaData() (gas: 6988)
+testTransferFrom() (gas: 388134)
 testFailTransferFromInsufficientBalance() (gas: 359467)
 testFailPermitPastDeadline() (gas: 1467)
 testFailPermitReplay() (gas: 59219)
diff --git a/src/test/ERC20.t.sol b/src/test/ERC20.t.sol
index 522bd008..ee260034 100644
--- a/src/test/ERC20.t.sol
+++ b/src/test/ERC20.t.sol
@@ -287,11 +287,12 @@ contract ERC20Test is DSTestPlus {
     }
 
     function testPermit(
-        uint256 privateKey,
+        uint248 privKey,
         address to,
         uint256 amount,
         uint256 deadline
     ) public {
+        uint256 privateKey = privKey;
         if (deadline < block.timestamp) deadline = block.timestamp;
         if (privateKey == 0) privateKey = 1;