diff --git a/config.json b/config.json
index db7bb3a..0c79a4a 100644
--- a/config.json
+++ b/config.json
@@ -26,7 +26,7 @@
         "alpn": [
           "h3"
         ],
-        "certificate_path": "/etc/sing-box/tls/server.pem",
+        "certificate_path": "/etc/sing-box/tls/server.key",
         "key_path": "/etc/sing-box/tls/server.crt"
       }
     }