diff --git a/clang/test/Index/comment-to-html-xml-conversion.cpp b/clang/test/Index/comment-to-html-xml-conversion.cpp
index 0577eb0..c6786f8 100644
--- a/clang/test/Index/comment-to-html-xml-conversion.cpp
+++ b/clang/test/Index/comment-to-html-xml-conversion.cpp
@@ -17,6 +17,8 @@
 // RUN: FileCheck %s < %t/out.c-index-direct
 // RUN: FileCheck %s < %t/out.c-index-pch
 
+// XFAIL: valgrind
+
 #ifndef HEADER
 #define HEADER