diff --git a/client/auth/sig.go b/client/auth/sig.go
index d9b7af9..a8e8f89 100644
--- a/client/auth/sig.go
+++ b/client/auth/sig.go
@@ -31,7 +31,6 @@ type SigInfo struct {
 	TempPwd     []byte
 	CaptchaInfo [3]string
 
-	CaptchaURL         string
 	NewDeviceVerifyURL string
 
 	Nickname string
diff --git a/client/client.go b/client/client.go
index cb30f36..22b39f1 100644
--- a/client/client.go
+++ b/client/client.go
@@ -189,7 +189,7 @@ func (c *QQClient) PasswordLogin() (*LoginResponse, error) {
 	return &res, err
 }
 
-func (c *QQClient) CommitCaptcha(ticket, randStr, aid string) (*LoginResponse, error) {
+func (c *QQClient) SubmitCaptcha(ticket, randStr, aid string) (*LoginResponse, error) {
 	c.Sig().CaptchaInfo = [3]string{ticket, randStr, aid}
 	data, err := buildPasswordLoginRequest(c.Uin, c.version(), c.Device(), &c.transport.Sig, c.PasswordMD5)
 	if err != nil {
diff --git a/client/ntlogin.go b/client/ntlogin.go
index 0d65387..899954d 100644
--- a/client/ntlogin.go
+++ b/client/ntlogin.go
@@ -150,12 +150,6 @@ func parseNtloginResponse(response []byte, sig *auth.SigInfo) (LoginResponse, er
 			return nil
 		}()
 		sig.Cookies = base.Header.Cookie.Cookie.Unwrap()
-		sig.CaptchaURL = func() string {
-			if body.Captcha != nil {
-				return body.Captcha.Url
-			}
-			return ""
-		}()
 		sig.NewDeviceVerifyURL = base.Header.Error.NewDeviceVerifyUrl.Unwrap()
 		err = nil
 	}
@@ -166,12 +160,15 @@ func parseNtloginResponse(response []byte, sig *auth.SigInfo) (LoginResponse, er
 		err = fmt.Errorf("login fail on ntlogin(%s): [%s]>%s", ret.Name(), title, content)
 	}
 	var loginErr LoginError
+	var verifyURL string
 	//nolint:exhaustive
 	switch ret {
 	case loginstate.CaptchaVerify:
-		loginErr = NeedCaptcha
+		loginErr = SliderNeededError
+		verifyURL = body.Captcha.Url
 	case loginstate.NewDeviceVerify:
 		loginErr = UnsafeDeviceError
+		verifyURL = base.Header.Error.NewDeviceVerifyUrl.Unwrap()
 	default:
 		loginErr = OtherLoginError
 	}
@@ -179,6 +176,7 @@ func parseNtloginResponse(response []byte, sig *auth.SigInfo) (LoginResponse, er
 		Success:      false,
 		Error:        loginErr,
 		ErrorMessage: ret.Name(),
+		VerifyURL:    verifyURL,
 	}, err
 }
 
diff --git a/main.go b/main.go
index e676190..40160cf 100644
--- a/main.go
+++ b/main.go
@@ -89,15 +89,15 @@ func main() {
 					return nil
 				}
 				switch ret.Error {
-				case client.NeedCaptcha:
+				case client.SliderNeededError:
 					logger.Warnln("captcha verification required")
-					logger.Warnln(c.Sig().CaptchaURL)
-					aid := strings.Split(strings.Split(c.Sig().CaptchaURL, "&sid=")[1], "&")[0]
+					logger.Warnln(ret.VerifyURL)
+					aid := strings.Split(strings.Split(ret.VerifyURL, "sid=")[1], "&")[0]
 					logger.Warnln("ticket?->")
 					ticket := utils.ReadLine()
 					logger.Warnln("rand_str?->")
 					randStr := utils.ReadLine()
-					ret, err = c.CommitCaptcha(ticket, randStr, aid)
+					ret, err = c.SubmitCaptcha(ticket, randStr, aid)
 					continue
 				case client.UnsafeDeviceError:
 					vf, err := c.GetNewDeviceVerifyURL()