diff --git a/scripts/validate_options.cmake b/scripts/validate_options.cmake
index 97e29b75e..e9a4b66b4 100644
--- a/scripts/validate_options.cmake
+++ b/scripts/validate_options.cmake
@@ -110,7 +110,7 @@ if (LUISA_COMPUTE_ENABLE_FALLBACK)
     find_package(LLVM CONFIG)
     find_package(embree CONFIG)
     if (NOT LLVM_FOUND AND WIN32)
-        include(${CMAKE_SOURCE_DIR}/scripts/download_and_patch_llvm.cmake)
+        include(${CMAKE_CURRENT_SOURCE_DIR}/scripts/download_and_patch_llvm.cmake)
     endif ()
     if (NOT LLVM_FOUND OR LLVM_VERSION VERSION_LESS 16 OR
             NOT embree_FOUND OR embree_VERSION VERSION_LESS 3)