diff --git a/test/CodeGen/Generic/MachineBranchProb.ll b/test/CodeGen/Generic/MachineBranchProb.ll
index 802ee2cb055..0e98280694c 100644
--- a/test/CodeGen/Generic/MachineBranchProb.ll
+++ b/test/CodeGen/Generic/MachineBranchProb.ll
@@ -1,5 +1,8 @@
 ; RUN: llc < %s -print-machineinstrs=expand-isel-pseudos -o /dev/null 2>&1 | FileCheck %s
 
+; ARM & AArch64 run an extra SimplifyCFG which disrupts this test.
+; XFAIL: arm,aarch64
+
 ; Make sure we have the correct weight attached to each successor.
 define i32 @test2(i32 %x) nounwind uwtable readnone ssp {
 ; CHECK: Machine code for function test2: