diff --git a/weixin/mp_sdk.go b/weixin/mp_sdk.go
index 19fc30f..ce83820 100644
--- a/weixin/mp_sdk.go
+++ b/weixin/mp_sdk.go
@@ -132,7 +132,7 @@ func (o *MpSdk) GetScheme(params map[string]interface{}) (string, error) {
 	if err != nil {
 		return "", err
 	}
-	url := fmt.Sprintf("%s?access_token=%s", getWxACodeUnLimitUrl, accessToken)
+	url := fmt.Sprintf("%s?access_token=%s", getWxScheme, accessToken)
 	res, _ := http.Post(url, "application/json", bytes.NewBuffer(marshal))
 	body, err := io.ReadAll(res.Body)
 	defer res.Body.Close()