diff --git a/internal/cli/config.go b/internal/cli/config.go
index 3326558..e57e78a 100644
--- a/internal/cli/config.go
+++ b/internal/cli/config.go
@@ -42,8 +42,8 @@ func (a *app) loadConfig(cmd *cobra.Command, _ []string) error {
 
 	err := config.ReadInConfig()
 
-	var notFound viper.ConfigFileNotFoundError
-	if errors.As(err, &notFound) {
+	_, isNotFound := errors.AsType[viper.ConfigFileNotFoundError](err)
+	if isNotFound {
 		a.config = config
 
 		return nil
diff --git a/pkg/cbk/cbk_test.go b/pkg/cbk/cbk_test.go
index c22d684..28b0259 100644
--- a/pkg/cbk/cbk_test.go
+++ b/pkg/cbk/cbk_test.go
@@ -37,9 +37,11 @@ const (
 // the BIP85 derivation was implemented. If this test starts failing, the
 // derivation has changed and existing keys are no longer reproducible.
 const (
-	vectorPublicKeyHex = "dbef711b3f340d336eb99cd8d0dbd491e1edce8eaad71cd66be228032a9a743e"
+	vectorPublicKeyHex = "dbef711b3f340d336eb99cd8d0dbd491" +
+		"e1edce8eaad71cd66be228032a9a743e"
 
-	vectorPrivateKeyHex = "ea3ceb0b02ee8e587779c63f4b7b3a21e950a213f1ec53cab608d13e8796e6dc"
+	vectorPrivateKeyHex = "ea3ceb0b02ee8e587779c63f4b7b3a21" +
+		"e950a213f1ec53cab608d13e8796e6dc"
 )
 
 func TestSpecMnemonicProducesSpecMasterKey(t *testing.T) {