diff --git a/clang/test/CodeGen/clear_cache.c b/clang/test/CodeGen/clear_cache.c
index 2ba0abe06254..1caa33f6bf55 100644
--- a/clang/test/CodeGen/clear_cache.c
+++ b/clang/test/CodeGen/clear_cache.c
@@ -1,5 +1,5 @@
 // NOTE: Assertions have been autogenerated by utils/update_cc_test_checks.py
-// RUN: %clang_cc1 -emit-llvm %s -o - | FileCheck %s
+// RUN: %clang_cc1 -triple x86_64-linux-gnu -emit-llvm %s -o - | FileCheck %s
 
 char buffer[32] = "This is a largely unused buffer";