diff --git a/libcxx/test/support/test_iterators.h b/libcxx/test/support/test_iterators.h
index b98c35b1d0c6d..f7eee4ca3abfc 100644
--- a/libcxx/test/support/test_iterators.h
+++ b/libcxx/test/support/test_iterators.h
@@ -53,7 +53,7 @@ class cpp17_output_iterator
     template <class T>
     void operator,(T const &) = delete;
 };
-#if _LIBCPP_STD_VER > 17
+#if TEST_STD_VER > 17
    static_assert(std::output_iterator<cpp17_output_iterator<int*>, int>);
 #endif
 
@@ -94,7 +94,7 @@ class cpp17_input_iterator
     template <class T>
     void operator,(T const &) = delete;
 };
-#if _LIBCPP_STD_VER > 17
+#if TEST_STD_VER > 17
    static_assert(std::input_iterator<cpp17_input_iterator<int*>>);
 #endif
 
diff --git a/libcxx/test/support/test_range.h b/libcxx/test/support/test_range.h
index 93fe95547e941..c1cfb9ea88929 100644
--- a/libcxx/test/support/test_range.h
+++ b/libcxx/test/support/test_range.h
@@ -13,7 +13,7 @@
 
 #include "test_iterators.h"
 
-#if _LIBCPP_STD_VER < 17
+#if TEST_STD_VER < 17
 #error "test/support/test_range.h" can only be included in builds supporting ranges
 #endif