diff --git a/configs/nginx.conf b/configs/nginx.conf
index 91f1e2d..63b41b6 100644
--- a/configs/nginx.conf
+++ b/configs/nginx.conf
@@ -40,8 +40,11 @@ server {
     }
 
     location ~ /api/guestbook/.+ {
-        limit_req   zone=captcha_api nodelay;
+        allow 192.168.144.0/25;
+        deny all;
+    }
 
+    location ~ /api/mindflow?.+ {
         allow 192.168.144.0/25;
         deny all;
     }