diff --git a/accounts/abi/bind/base.go b/accounts/abi/bind/base.go
index bf223384fd..09776c6b47 100644
--- a/accounts/abi/bind/base.go
+++ b/accounts/abi/bind/base.go
@@ -289,7 +289,7 @@ func (c *BoundContract) transact(opts *TransactOpts, contract *common.Address, i
 		rawTx = types.NewTransaction(nonce, c.address, value, gasLimit, gasPrice, input)
 	}
 	if opts.Signer == nil {
-		return rawTx, errors.New("no signer to authorize the transaction with")
+		return nil, errors.New("no signer to authorize the transaction with")
 	}
 	signedTx, err := opts.Signer(types.HomesteadSigner{}, opts.From, rawTx)
 	if err != nil {