diff --git a/accounts/usbwallet/ledger.go b/accounts/usbwallet/ledger.go
index ef713da0cb..7aa945a104 100644
--- a/accounts/usbwallet/ledger.go
+++ b/accounts/usbwallet/ledger.go
@@ -170,7 +170,7 @@ func (w *ledgerDriver) SignTx(path accounts.DerivationPath, tx *types.Transactio
 
 // SignData sends a blob of data to the USB device and waits for the user to confirm
 // or deny the signing request.
-func (w *ledgerDriver) SignData(path accounts.DerivationPath, hash []byte) (common.Address, []byte, error) {
+func (w *ledgerDriver) SignData(path accounts.DerivationPath, data []byte) (common.Address, []byte, error) {
 	return common.Address{}, nil, accounts.ErrNotSupported
 }
 
diff --git a/signer/core/signed_data.go b/signer/core/signed_data.go
index 926ae037ac..8b014f8ff5 100644
--- a/signer/core/signed_data.go
+++ b/signer/core/signed_data.go
@@ -144,7 +144,7 @@ func (api *SignerAPI) sign(addr common.MixedcaseAddress, req *SignDataRequest, l
 	}
 	// Only ask for the passphrase if the account is keystore based
 	pw := ""
-	if strings.Compare(wallet.URL().Scheme, "keystore") == 0 {
+	if wallet.URL().Scheme == "keystore" {
 		pw, err = api.lookupOrQueryPassword(account.Address,
 			"Password for signing",
 			fmt.Sprintf("Please enter password for signing data with account %s", account.Address.Hex()))