diff --git a/test/Tooling/auto-detect-from-source.cpp b/test/Tooling/auto-detect-from-source.cpp
index d8e82e7..6419bef 100644
--- a/test/Tooling/auto-detect-from-source.cpp
+++ b/test/Tooling/auto-detect-from-source.cpp
@@ -8,3 +8,4 @@
 invalid;
 
 // REQUIRES: shell
+// XFAIL: win64