diff --git a/BuildRel.bat b/BuildRel.bat
index b97ac10..c2133e5 100644
--- a/BuildRel.bat
+++ b/BuildRel.bat
@@ -8,7 +8,7 @@ if errorlevel 1 (
     exit /b 1
 )
 
-cmake -Bbuild -DCMAKE_TOOLCHAIN_FILE=%VCPKG_ROOT%\scripts\buildsystems\vcpkg.cmake -DCMAKE_BUILD_TYPE=Release
+cmake -Bbuild -DCMAKE_TOOLCHAIN_FILE=%VCPKG_DIR%\scripts\buildsystems\vcpkg.cmake -DCMAKE_BUILD_TYPE=Release
 if errorlevel 1 (
     config failed.
     pause