diff --git a/shadowsocks-csharp/Data/sysproxy.exe.gz b/shadowsocks-csharp/Data/sysproxy.exe.gz
index 6f079603..d4b5ddd4 100644
Binary files a/shadowsocks-csharp/Data/sysproxy.exe.gz and b/shadowsocks-csharp/Data/sysproxy.exe.gz differ
diff --git a/shadowsocks-csharp/Data/sysproxy64.exe.gz b/shadowsocks-csharp/Data/sysproxy64.exe.gz
index 6a2041c1..6d5fff68 100644
Binary files a/shadowsocks-csharp/Data/sysproxy64.exe.gz and b/shadowsocks-csharp/Data/sysproxy64.exe.gz differ
diff --git a/shadowsocks-csharp/Util/SystemProxy/Sysproxy.cs b/shadowsocks-csharp/Util/SystemProxy/Sysproxy.cs
index f0353f46..cd6fac5a 100644
--- a/shadowsocks-csharp/Util/SystemProxy/Sysproxy.cs
+++ b/shadowsocks-csharp/Util/SystemProxy/Sysproxy.cs
@@ -44,11 +44,11 @@ namespace Shadowsocks.Util.SystemProxy
             {
                 if (global)
                 {
-                    arguments = "global " + proxyServer;
+                    arguments = $"global {proxyServer} <local>localhost;127.*;10.*;172.16.*;172.17.*;172.18.*;172.19.*;172.20.*;172.21.*;172.22.*;172.23.*;172.24.*;172.25.*;172.26.*;172.27.*;172.28.*;172.29.*;172.30.*;172.31.*;172.32.*;192.168.*";
                 }
                 else
                 {
-                    arguments = "pac " + pacURL;
+                    arguments = $"pac {pacURL}";
                 }
             }
             else