diff --git a/cmake/Modules/GetClangResourceDir.cmake b/cmake/Modules/GetClangResourceDir.cmake
index def5bd60424e7..518220188f96d 100644
--- a/cmake/Modules/GetClangResourceDir.cmake
+++ b/cmake/Modules/GetClangResourceDir.cmake
@@ -10,7 +10,8 @@ function(get_clang_resource_dir out_var)
   cmake_parse_arguments(ARG "" "PREFIX;SUBDIR" "" ${ARGN})
 
   if(DEFINED CLANG_RESOURCE_DIR AND NOT CLANG_RESOURCE_DIR STREQUAL "")
-    set(ret_dir bin/${CLANG_RESOURCE_DIR})
+    set(ret_dir bin)
+    cmake_path(APPEND ret_dir ${CLANG_RESOURCE_DIR})
   else()
     if (NOT CLANG_VERSION_MAJOR)
       string(REGEX MATCH "^[0-9]+" CLANG_VERSION_MAJOR ${PACKAGE_VERSION})