@@ -15,7 +15,7 @@ import (

 var honorXDG bool

-func newDaemonCommand(stderr io.Writer) (*cobra.Command, error) {

+func newDaemonCommand() (*cobra.Command, error) {

 	// FIXME(thaJeztah): config.New also looks up default binary-path, but this code is also executed when running "--version".

 	cfg, err := config.New()

 	if err != nil {

@@ -38,7 +38,10 @@ func newDaemonCommand(stderr io.Writer) (*cobra.Command, error) {

 			}

 			if opts.Validate {

 				// If config wasn't OK we wouldn't have made it this far.

-				_, _ = fmt.Fprintln(stderr, "configuration OK")

+				//

+				// We print this message on STDERR, not STDOUT, to align

+				// with other tools, such as "nginx -t" or "sshd -t".

+				cmd.PrintErrln("configuration OK")

 				return nil

 			}

@@ -104,11 +107,12 @@ func NewDaemonRunner(stdout, stderr io.Writer) (Runner, error) {

 	initLogging(stdout, stderr)

-	cmd, err := newDaemonCommand(stderr)

+	cmd, err := newDaemonCommand()

 	if err != nil {

 		return nil, err

 	}

 	cmd.SetOut(stdout)

+	cmd.SetErr(stderr)

 	return daemonRunner{cmd}, nil

 }