diff --git a/ethclient/ethclient.go b/ethclient/ethclient.go
index bd5f3e4188..a61bf94a67 100644
--- a/ethclient/ethclient.go
+++ b/ethclient/ethclient.go
@@ -246,6 +246,8 @@ func (ec *Client) TransactionSender(ctx context.Context, tx *types.Transaction,
 	if err == nil {
 		return sender, nil
 	}
+
+	// It was not found in cache, ask the server.
 	var meta struct {
 		Hash common.Hash
 		From common.Address
diff --git a/ethclient/signer.go b/ethclient/signer.go
index 1db03a9c95..cd82a6aca0 100644
--- a/ethclient/signer.go
+++ b/ethclient/signer.go
@@ -45,7 +45,7 @@ func (s *senderFromServer) Equal(other types.Signer) bool {
 }
 
 func (s *senderFromServer) Sender(tx *types.Transaction) (common.Address, error) {
-	if s.blockhash == (common.Hash{}) {
+	if s.addr == (common.Address{}) {
 		return common.Address{}, errNotCached
 	}
 	return s.addr, nil