diff --git a/ext/standard/tests/network/udp4loop.phpt b/ext/standard/tests/network/udp4loop.phpt
index 92709233ba19..bde3f8dcef56 100644
--- a/ext/standard/tests/network/udp4loop.phpt
+++ b/ext/standard/tests/network/udp4loop.phpt
@@ -3,7 +3,7 @@ Streams Based IPv4 UDP Loopback test
 --FILE--
 <?php
     /* Setup socket server */
-    for ($port = 31338; $port < 31500; ++$port) {
+    for ($port = 31339; $port < 31500; ++$port) {
       $uri = "udp://127.0.0.1:$port";
       $server = @stream_socket_server($uri, $errno, $errstr, STREAM_SERVER_BIND);
       if ($server) break;