diff --git a/options/options_generator.go b/options/options_generator.go
index a9f78d8..e8c306c 100644
--- a/options/options_generator.go
+++ b/options/options_generator.go
@@ -17,8 +17,6 @@ package options
 import (
 	"bytes"
 	"fmt"
-	"github.com/chenmingyong0423/gkit/stringx"
-	"github.com/chenmingyong0423/go-optioner/templates"
 	"go/ast"
 	"go/build"
 	"go/format"
@@ -30,6 +28,9 @@ import (
 	"reflect"
 	"strconv"
 	"strings"
+
+	"github.com/chenmingyong0423/gkit/stringx"
+	"github.com/chenmingyong0423/go-optioner/templates"
 )
 
 type Generator struct {
@@ -226,6 +227,8 @@ func (g *Generator) getTypeName(expr ast.Expr) string {
 		return g.parseFuncType(t)
 	case *ast.ChanType:
 		return "chan " + g.getTypeName(t.Value)
+	case *ast.UnaryExpr:
+		return "~" + g.getTypeName(t.X)
 	default:
 		log.Fatalf("Unsupported type for field: %T", t)
 		return ""
diff --git a/templates/options_templates.go b/templates/options_templates.go
index 6dfe938..49532a2 100644
--- a/templates/options_templates.go
+++ b/templates/options_templates.go
@@ -46,8 +46,8 @@ func New{{ .StructName }}{{if .GenericParams}}[{{range $index, $param := .Generi
 
 {{ if .OptionalFields }}
 {{ range $field := .OptionalFields }}
-func With{{ $field.Name | capitalizeFirstLetter }}{{if $.GenericParams}}[{{range $index, $param := $.GenericParams}}{{if $index}}, {{end}}{{$param.Name}} {{$param.Type}}{{end}}]{{end}}({{ $field.Name | bigCamelToSmallCamel }} {{ $field.Type }}) {{ $.StructName }}Option {
-	return func({{ $.NewStructName }} *{{ $.StructName }}) {
+func With{{ $field.Name | capitalizeFirstLetter }}{{if $.GenericParams}}[{{range $index, $param := $.GenericParams}}{{if $index}}, {{end}}{{$param.Name}} {{$param.Type}}{{end}}]{{end}}({{ $field.Name | bigCamelToSmallCamel }} {{ $field.Type }}) {{ $.StructName }}Option{{if $.GenericParams}}[{{range $index, $param := $.GenericParams}}{{if $index}}, {{end}}{{$param.Name}}{{end}}]{{end}} {
+	return func({{ $.NewStructName }} *{{ $.StructName }}{{if $.GenericParams}}[{{range $index, $param := $.GenericParams}}{{if $index}}, {{end}}{{$param.Name}}{{end}}]{{end}}) {
 		{{ $.NewStructName }}.{{ $field.Name }} = {{ $field.Name | bigCamelToSmallCamel }}
 	}
 }