diff --git a/v2rayN/ServiceLib/Global.cs b/v2rayN/ServiceLib/Global.cs
index f962efe1..da70326b 100644
--- a/v2rayN/ServiceLib/Global.cs
+++ b/v2rayN/ServiceLib/Global.cs
@@ -72,6 +72,7 @@ namespace ServiceLib
         public const string LocalAppData = "V2RAYN_LOCAL_APPLICATION_DATA_V2";
         public const string V2RayLocalAsset = "V2RAY_LOCATION_ASSET";
         public const string XrayLocalAsset = "XRAY_LOCATION_ASSET";
+        public const string XrayLocalCert = "XRAY_LOCATION_CERT";
         public const int SpeedTestPageSize = 1000;
         public const string LinuxBash = "/bin/bash";