diff --git a/src/xutil/xhttp/options.go b/src/xutil/xhttp/options.go
index c5237a5..864e92f 100644
--- a/src/xutil/xhttp/options.go
+++ b/src/xutil/xhttp/options.go
@@ -31,8 +31,8 @@ type requestOptions struct {
 	RetryOptions []retry.Option
 }
 
-func getOptions(opts []RequestOption) *requestOptions {
-	opt := DefaultOptions
+func mergeOptions(opts []RequestOption) *requestOptions {
+	opt := DefaultOptions // copy
 	for _, o := range opts {
 		o.apply(&opt)
 	}
diff --git a/src/xutil/xhttp/request.go b/src/xutil/xhttp/request.go
index f1bf14e..4fceb73 100644
--- a/src/xutil/xhttp/request.go
+++ b/src/xutil/xhttp/request.go
@@ -37,7 +37,7 @@ func newResponse(r *http.Response) *Response {
 }
 
 func Request(method string, u string, opts ...RequestOption) (*Response, error) {
-	opt := getOptions(opts)
+	opt := mergeOptions(opts)
 	URL, err := url.Parse(u)
 	if err != nil {
 		return nil, err
@@ -60,7 +60,7 @@ func Request(method string, u string, opts ...RequestOption) (*Response, error)
 }
 
 func Do(req *http.Request, opts ...RequestOption) (*Response, error) {
-	opt := getOptions(opts)
+	opt := mergeOptions(opts)
 
 	if opt.RetryOptions != nil {
 		return doRetry(opt, func() (*Response, error) {