diff --git a/llvm/utils/release/build_llvm_release.bat b/llvm/utils/release/build_llvm_release.bat
index 3aeedaa3288a2..ec133032bf54f 100644
--- a/llvm/utils/release/build_llvm_release.bat
+++ b/llvm/utils/release/build_llvm_release.bat
@@ -347,7 +347,7 @@ if "%arch%"=="amd64" (
   set filename=clang+llvm-%version%-aarch64-pc-windows-msvc
 )
 cmake -GNinja %cmake_flags% %cmake_profile_flags% -DLLVM_INSTALL_TOOLCHAIN_ONLY=OFF ^
-  -DCMAKE_INSTALL_PREFIX=%build_dir%/%filename% ..\llvm-project\llvm || exit /b 1
+  -DCMAKE_INSTALL_PREFIX=%build_dir%/%filename% %llvm_src%\llvm || exit /b 1
 ninja install || exit /b 1
 :: check llvm_config is present & returns something
 %build_dir%/%filename%/bin/llvm-config.exe --bindir || exit /b 1