diff --git a/libcxx/test/libcxx/thread/thread.mutex/thread.lock/thread.lock.guard/variadic_mutex_mangling.pass.cpp b/libcxx/test/libcxx/thread/thread.mutex/thread.lock/thread.lock.guard/variadic_mutex_mangling.pass.cpp
index d3568caa81a3..7e4fe2267fe1 100644
--- a/libcxx/test/libcxx/thread/thread.mutex/thread.lock/thread.lock.guard/variadic_mutex_mangling.pass.cpp
+++ b/libcxx/test/libcxx/thread/thread.mutex/thread.lock/thread.lock.guard/variadic_mutex_mangling.pass.cpp
@@ -12,6 +12,7 @@
 // TODO(EricWF) Investigate why typeid(...).name() returns a different string
 // on GCC 4.9 but not newer GCCs.
 // XFAIL: gcc-4.9
+// XFAIL: windows
 
 // THIS TESTS C++03 EXTENSIONS.