diff --git a/apps/chat.js b/apps/chat.js
index b7c635f..875402c 100644
--- a/apps/chat.js
+++ b/apps/chat.js
@@ -1788,7 +1788,7 @@ export class chatgpt extends plugin {
             const { maxConv } = error
             if (message && typeof message === 'string' && message.indexOf('CaptchaChallenge') > -1) {
               if (bingToken) {
-                if (maxConv > 20) {
+                if (maxConv >= 20) {
                   // maxConv为30说明token有效，可以通过解验证码码服务过码
                   await e.reply('出现必应验证码，尝试解决中')
                   try {