diff --git a/src/websocket/server_ev.lua b/src/websocket/server_ev.lua
index abd7a20..85d7722 100644
--- a/src/websocket/server_ev.lua
+++ b/src/websocket/server_ev.lua
@@ -1,6 +1,5 @@
 
 local socket = require'socket'
-local tools = require'websocket.tools'
 local frame = require'websocket.frame'
 local handshake = require'websocket.handshake'
 local tconcat = table.concat