diff --git a/cmd/neofs-oauthz/config.go b/cmd/neofs-oauthz/config.go
index c843039..49af8d6 100644
--- a/cmd/neofs-oauthz/config.go
+++ b/cmd/neofs-oauthz/config.go
@@ -10,6 +10,8 @@ import (
 	"github.com/spf13/pflag"
 	"github.com/spf13/viper"
 	"go.uber.org/zap"
+	"go.uber.org/zap/zapcore"
+	"golang.org/x/term"
 )
 
 const (
@@ -141,6 +143,12 @@ func newLogger(v *viper.Viper) (*zap.Logger, error) {
 		}
 	}
 
+	if term.IsTerminal(int(os.Stdout.Fd())) {
+		c.EncoderConfig.EncodeTime = zapcore.ISO8601TimeEncoder
+	} else {
+		c.EncoderConfig.EncodeTime = func(t time.Time, encoder zapcore.PrimitiveArrayEncoder) {}
+	}
+
 	return c.Build()
 }