diff --git a/async_web3/contract.py b/async_web3/contract.py
index 1aa3872..b6f9798 100644
--- a/async_web3/contract.py
+++ b/async_web3/contract.py
@@ -564,7 +564,8 @@ def __call__(self, *args: Tuple) -> Awaitable:
         return self.transact(*args)
 
     def build(self, *args: Tuple) -> SignedTransaction:
-        return self.build_transaction(*arg)
+        return self.build_transaction(*args)
+
 
 class ContractCall(_ContractMethod):