diff --git a/clang/test/CodeGen/no-builtin.cpp b/clang/test/CodeGen/no-builtin.cpp
index 3c5d681282da..24df100d8717 100644
--- a/clang/test/CodeGen/no-builtin.cpp
+++ b/clang/test/CodeGen/no-builtin.cpp
@@ -1,4 +1,5 @@
 // RUN: %clang_cc1 -triple x86_64-linux-gnu -S -emit-llvm -o - %s | FileCheck %s
+// UNSUPPORTED: ppc64be
 
 // CHECK-LABEL: define void @foo_no_mempcy() #0
 extern "C" void foo_no_mempcy() __attribute__((no_builtin("memcpy"))) {}
diff --git a/clang/test/Sema/no-builtin.cpp b/clang/test/Sema/no-builtin.cpp
index 40781abd3037..8908f38333bd 100644
--- a/clang/test/Sema/no-builtin.cpp
+++ b/clang/test/Sema/no-builtin.cpp
@@ -1,4 +1,5 @@
 // RUN: %clang_cc1 -triple x86_64-unknown-unknown -fsyntax-only -verify %s
+// UNSUPPORTED: ppc64be
 
 /// Prevent use of all builtins.
 void valid_attribute_all_1() __attribute__((no_builtin)) {}