diff --git a/ethers/signers/wallet/signing.nim b/ethers/signers/wallet/signing.nim
index 1ba79e6..16c7ad6 100644
--- a/ethers/signers/wallet/signing.nim
+++ b/ethers/signers/wallet/signing.nim
@@ -34,8 +34,8 @@ func toSignableTransaction(transaction: Transaction): SignableTransaction =
   if maxFee =? transaction.maxFee and
      maxPriorityFee =? transaction.maxPriorityFee:
     signable.txType = TxEip1559
-    signable.maxFee = GasInt(maxFee.truncate(uint64))
-    signable.maxPriorityFee = GasInt(maxPriorityFee.truncate(uint64))
+    signable.maxFeePerGas = GasInt(maxFee.truncate(uint64))
+    signable.maxPriorityFeePerGas = GasInt(maxPriorityFee.truncate(uint64))
   elif gasPrice =? transaction.gasPrice:
     signable.txType = TxLegacy
     signable.gasPrice = GasInt(gasPrice.truncate(uint64))