diff --git a/tensorflow/core/lib/gtl/manual_constructor_test.cc b/tensorflow/core/lib/gtl/manual_constructor_test.cc
index 35cbc78b664..77824326a7d 100644
--- a/tensorflow/core/lib/gtl/manual_constructor_test.cc
+++ b/tensorflow/core/lib/gtl/manual_constructor_test.cc
@@ -92,7 +92,7 @@ TEST(ManualConstructorTest, Alignment) {
 
   EXPECT_EQ(reinterpret_cast<char*>(test2.b.get()) - &test2.a,
             reinterpret_cast<char*>(&control2.b) - &control2.a);
-#ifdef ARCH_K8
+#ifdef __x86_64__
   EXPECT_EQ(reinterpret_cast<intptr_t>(test2.b.get()) % 16, 0);
 #endif
 }