diff --git a/G-Earth/src/main/java/gearth/protocol/connection/proxy/nitro/os/macos/NitroMacOS.java b/G-Earth/src/main/java/gearth/protocol/connection/proxy/nitro/os/macos/NitroMacOS.java
index fd094a3..35d5ff1 100644
--- a/G-Earth/src/main/java/gearth/protocol/connection/proxy/nitro/os/macos/NitroMacOS.java
+++ b/G-Earth/src/main/java/gearth/protocol/connection/proxy/nitro/os/macos/NitroMacOS.java
@@ -59,7 +59,6 @@ public class NitroMacOS implements NitroOsFunctions {
     @Override
     public boolean registerSystemProxy(String host, int port) {
         try {
-            final String proxy = String.format("%s:%d", host, port);
             final String[] ignoreHosts = PROXY_IGNORE.split(";");
 
             // Enable proxy