diff --git a/_examples/main.go b/_examples/main.go
index 4e3b2d6..ffe57c0 100644
--- a/_examples/main.go
+++ b/_examples/main.go
@@ -49,7 +49,7 @@ func generateCaptchaHandler(w http.ResponseWriter, r *http.Request) {
 		driver = param.DriverDigit
 	}
 	c := base64Captcha.NewCaptcha(driver, store)
-	id, b64s, err := c.Generate()
+	id, b64s,_, err := c.Generate()
 	body := map[string]interface{}{"code": 1, "data": b64s, "captchaId": id, "msg": "success"}
 	if err != nil {
 		body = map[string]interface{}{"code": 0, "msg": err.Error()}