diff --git a/clang/test/SemaCXX/no-rtti.cpp b/clang/test/SemaCXX/no-rtti.cpp
index e0b57153c24c9b..f8487a0902dda2 100644
--- a/clang/test/SemaCXX/no-rtti.cpp
+++ b/clang/test/SemaCXX/no-rtti.cpp
@@ -1,4 +1,4 @@
-// RUN: %clang_cc1 -fsyntax-only -verify -fno-rtti %s
+// RUN: %clang_cc1 -triple x86_64-pc-linux-gnu -fsyntax-only -verify -fno-rtti %s
 
 namespace std {
   class type_info;
diff --git a/clang/test/SemaCXX/no_dynamic_cast.cpp b/clang/test/SemaCXX/no_dynamic_cast.cpp
index 4db21d36f4a998..074b02f4668bcf 100644
--- a/clang/test/SemaCXX/no_dynamic_cast.cpp
+++ b/clang/test/SemaCXX/no_dynamic_cast.cpp
@@ -1,4 +1,4 @@
-// RUN: %clang_cc1 %s -fno-rtti-data -fsyntax-only -verify
+// RUN: %clang_cc1 %s -triple x86_64-pc-linux-gnu -fno-rtti-data -fsyntax-only -verify
 
 namespace std {
 struct type_info {};