diff --git a/app/Libs/AlipayF2F.class.php b/app/Libs/AlipayF2F.class.php
index ca853f5..31a29ab 100644
--- a/app/Libs/AlipayF2F.class.php
+++ b/app/Libs/AlipayF2F.class.php
@@ -48,7 +48,7 @@ class AlipayF2F
         $options->signType = 'RSA2';
 
         // 为避免私钥随源码泄露，推荐从文件中读取私钥字符串而不是写入源码中
-        $options->merchantPrivateKey = env("ALI_MERCHANT_KEY");
+        $options->merchantPrivateKey = env("ALI_APP_PRIVATE_KEY");
 
         $options->appId = env("ALI_APP_ID");
         //$options->alipayCertPath = env("ALI_CERT_ALIPAY");