diff --git a/deployment/params.py b/deployment/params.py
index 0c1b9a21..ad7f425d 100644
--- a/deployment/params.py
+++ b/deployment/params.py
@@ -9,6 +9,7 @@
 from ape.cli.choices import select_account
 from ape.contracts.base import ContractContainer, ContractInstance, ContractTransactionHandler
 from ape.utils import EMPTY_BYTES32, ZERO_ADDRESS
+from ape_test import TestAccount
 from eth_typing import ChecksumAddress
 from eth_utils import to_checksum_address
 from ethpm_types import MethodABI
@@ -488,7 +489,8 @@ def __init__(self, account: typing.Optional[AccountAPI] = None, autosign: bool =
         if autosign:
             print("WARNING: Autosign is enabled. Transactions will be signed automatically.")
         self._autosign = autosign
-        self._account.set_autosign(autosign)
+        if not isinstance(self._account, TestAccount):
+            self._account.set_autosign(autosign)
 
     def get_account(self) -> AccountAPI:
         """Returns the transactor account."""