diff --git a/docs/socks5/check.py b/docs/socks5/check.py
index 550b49c..be1b6a0 100644
--- a/docs/socks5/check.py
+++ b/docs/socks5/check.py
@@ -34,9 +34,9 @@ def check_udp() -> None:
     req = b"\x12\x34\x01\x00\x00\x01\x00\x00\x00\x00\x00\x00\x05\x62\x61\x69\x64\x75\x03\x63\x6f\x6d\x00\x00\x01\x00\x01"
     print(f"Sending DNS request to {TARGET}")
     start = time.time()
-    s.sendto(req, ("8.8.8.8", 53))
+    s.sendto(req, (TARGET, 53))
     (rsp, address) = s.recvfrom(4096)
-    if rsp[0] == req[0] and rsp[1] == req[1]:
+    if address[0] == TARGET and address[1] == 53 and rsp[0] == req[0] and rsp[1] == req[1]:
         print("UDP check passed")
     else:
         print("Invalid response")