diff --git a/test/udp-zero-length-send b/test/udp-zero-length-send
index a594944..9038c99 100755
--- a/test/udp-zero-length-send
+++ b/test/udp-zero-length-send
@@ -1,4 +1,4 @@
-#!/usr/bin/lua
+#!/usr/bin/env lua
 
 --[[
 Show that luasocket returns an error message on zero-length UDP sends,
@@ -12,7 +12,7 @@ listening on lo, link-type EN10MB (Ethernet), capture size 65535 bytes
 
 ]]
 
-require"socket"
+socket = require"socket"
 
 s = assert(socket.udp())
 r = assert(socket.udp())