diff --git a/scripts/lib/upt.lua b/scripts/lib/upt.lua
index 872cac1..aaf3cf6 100644
--- a/scripts/lib/upt.lua
+++ b/scripts/lib/upt.lua
@@ -19,7 +19,7 @@ function _M.upt(url)
     if string.find(hostname, "moicen.com") then
         ngx.log(ngx.INFO, 'match moicen.com: ' .. ngx.var.upt_moicen_secret)
         secret = ngx.var.upt_moicen_secret
-    elseif string.find(hostname, "alchemy-studio.cn", true) then
+    elseif string.find(hostname, "alchemy-studio.cn", 1, true) then
         ngx.log(ngx.INFO, 'match alchemy: ' .. ngx.var.upt_alchemy_secret)
         secret = ngx.var.upt_alchemy_secret
     elseif string.find(hostname, "huiwings.cn") then