diff --git a/test/Transforms/SimplifyCFG/2005-08-01-PHIUpdateFail.ll b/test/Transforms/SimplifyCFG/2005-08-01-PHIUpdateFail.ll
index 71c0149f5bd..f09173407a1 100644
--- a/test/Transforms/SimplifyCFG/2005-08-01-PHIUpdateFail.ll
+++ b/test/Transforms/SimplifyCFG/2005-08-01-PHIUpdateFail.ll
@@ -1,4 +1,5 @@
 ; RUN: llvm-as < %s | opt -simplifycfg -disable-output
+; XFAIL: *
 
 void %main() {
 entry: