diff --git a/nix/build-all.py b/nix/build-all.py
index 0dfc64fe5c..03c40d2541 100644
--- a/nix/build-all.py
+++ b/nix/build-all.py
@@ -1106,7 +1106,6 @@ cmake_args = [
     "-DUSE_MMAP=OFF",
     "-DBUILD_EXAMPLES=OFF",
     "-DBUILD_SHARED_LIBS=" + OFF_ON[not BUILD_STATIC],
-    f"-DBOOST_ROOT={DEPS_DIR}/install/boost-{BOOST_VERSION}",
     "-DGLTF_SUPPORT=ON",
     f"-DJSON_INCLUDE_DIR={DEPS_DIR}/install/json",
     f"-DEIGEN_DIR={DEPS_DIR}/install/eigen-3.3.9",
@@ -1115,7 +1114,9 @@ cmake_args = [
     "-DVERSION_OVERRIDE=" + ("On" if ADD_COMMIT_SHA else "Off"),
 ]
 """Default CMake args to use for all CMake configs."""
-cmake_args_prefix_path: list[str] = []
+cmake_args_prefix_path: list[str] = [
+    f"{DEPS_DIR}/install/boost-{BOOST_VERSION}",
+]
 
 
 def get_cmake_args_prefix_path(additional_paths: Sequence[str] = ()) -> list[str]:
diff --git a/win/run-cmake.bat b/win/run-cmake.bat
index 6c18155a7a..bb0ffb21bf 100755
--- a/win/run-cmake.bat
+++ b/win/run-cmake.bat
@@ -162,6 +162,7 @@ echo "Running CMake for %PROJECT_NAME%."
 
 set CMAKE_PREFIX_PATH=%HDF5_INSTALL_DIR%;%OPENCOLLADA_INSTALL_DIR%;%SWIG_INSTALL_DIR%
 set CMAKE_PREFIX_PATH=%CMAKE_PREFIX_PATH%;%ROCKSDB_INSTALL_DIR%;%ZSTD_INSTALL_DIR%
+set CMAKE_PREFIX_PATH=%CMAKE_PREFIX_PATH%;%BOOST_ROOT%
 
 IF NOT "%VS_TOOLSET_HOST%"=="" (
     cmake.exe %CMAKELISTS_DIR% -G %GENERATOR% -A %VS_PLATFORM% -T %VS_TOOLSET_HOST% ^