diff --git a/geetest4_slide/mian.py b/geetest4_slide/mian.py
index e319b6a..bcdbeff 100644
--- a/geetest4_slide/mian.py
+++ b/geetest4_slide/mian.py
@@ -35,7 +35,6 @@ def main(captchaId, challenge):
     detail_time = res['data']["pow_detail"]["datetime"]
     with open('jiyan.js', 'r', encoding='utf-8') as f:
         js = execjs.compile(f.read())
-    key = js.call('get_key')
     w = js.call('get_w', captchaId, lot_number, detail_time, distance, passtime, track)
     url = "https://gcaptcha4.geetest.com/verify"
     params = {