diff --git a/example/main.go b/example/main.go
index cc1a32a..5b5ed3b 100644
--- a/example/main.go
+++ b/example/main.go
@@ -47,15 +47,13 @@ var completer = readline.NewPrefixCompleter(
 )
 
 func main() {
-	cfg := &readline.Config{
+	l, err := readline.NewEx(&readline.Config{
 		Prompt:          "\033[31m»\033[0m ",
 		HistoryFile:     "/tmp/readline.tmp",
 		AutoComplete:    completer,
 		InterruptPrompt: "\nInterrupt, Press Ctrl+D to exit",
 		EOFPrompt:       "exit",
-	}
-
-	l, err := readline.NewEx(cfg)
+	})
 	if err != nil {
 		panic(err)
 	}
diff --git a/operation.go b/operation.go
index 8592de1..4ea03da 100644
--- a/operation.go
+++ b/operation.go
@@ -315,7 +315,9 @@ func (o *Operation) GenPasswordConfig() *Config {
 }
 
 func (o *Operation) PasswordWithConfig(cfg *Config) ([]byte, error) {
-	o.opPassword.EnterPasswordMode(cfg)
+	if err := o.opPassword.EnterPasswordMode(cfg); err != nil {
+		return nil, err
+	}
 	defer o.opPassword.ExitPasswordMode()
 	return o.Slice()
 }