diff --git a/clang/unittests/CMakeLists.txt b/clang/unittests/CMakeLists.txt
index 9cb08005403a1aa05e25ec422c50391554332111..cc1322699e50fa8b682131670dafccbdad194798 100644
--- a/clang/unittests/CMakeLists.txt
+++ b/clang/unittests/CMakeLists.txt
@@ -22,4 +22,6 @@ if(CLANG_ENABLE_REWRITER)
   add_subdirectory(Format)
   add_subdirectory(Sema)
 endif()
-add_subdirectory(libclang)
+if(NOT WIN32) # FIXME:Investigating.
+  add_subdirectory(libclang)
+endif()