diff --git a/ShadowsocksX-NG/ProxyConfHelper.m b/ShadowsocksX-NG/ProxyConfHelper.m
index 3665f11..ba7f6f4 100644
--- a/ShadowsocksX-NG/ProxyConfHelper.m
+++ b/ShadowsocksX-NG/ProxyConfHelper.m
@@ -14,7 +14,6 @@
 @implementation ProxyConfHelper
 
 GCDWebServer *webServer =nil;
-FSEventStreamRef fsEventStream;
 
 + (BOOL)isVersionOk {
     NSTask *task;