diff --git a/components/cli/command/service/opts.go b/components/cli/command/service/opts.go
index c7518e5976..cbe544aacc 100644
--- a/components/cli/command/service/opts.go
+++ b/components/cli/command/service/opts.go
@@ -84,7 +84,7 @@ func (d *DurationOpt) String() string {
 	if d.value != nil {
 		return d.value.String()
 	}
-	return "none"
+	return ""
 }
 
 // Value returns the time.Duration
@@ -114,7 +114,7 @@ func (i *Uint64Opt) String() string {
 	if i.value != nil {
 		return fmt.Sprintf("%v", *i.value)
 	}
-	return "none"
+	return ""
 }
 
 // Value returns the uint64
diff --git a/components/cli/command/service/opts_test.go b/components/cli/command/service/opts_test.go
index aa2d999dcf..78b956ad67 100644
--- a/components/cli/command/service/opts_test.go
+++ b/components/cli/command/service/opts_test.go
@@ -59,7 +59,7 @@ func TestUint64OptString(t *testing.T) {
 	assert.Equal(t, opt.String(), "2345678")
 
 	opt = Uint64Opt{}
-	assert.Equal(t, opt.String(), "none")
+	assert.Equal(t, opt.String(), "")
 }
 
 func TestUint64OptSetAndValue(t *testing.T) {