diff --git a/tests/std/tests/P1502R1_standard_library_header_units/test.cpp b/tests/std/tests/P1502R1_standard_library_header_units/test.cpp
index 1fa579ad294..7dba262dbb0 100644
--- a/tests/std/tests/P1502R1_standard_library_header_units/test.cpp
+++ b/tests/std/tests/P1502R1_standard_library_header_units/test.cpp
@@ -324,11 +324,11 @@ int main() {
         puts("Testing <future>.");
         promise<int> p{};
         future<int> f{p.get_future()};
-#if 0 // TRANSITION, VSO-1271718 (Standard Library Header Units ICE with C++20 chrono)
+#ifdef MSVC_INTERNAL_TESTING // TRANSITION, VSO-1271718 (Standard Library Header Units ICE with C++20 chrono)
         assert(f.wait_for(chrono::seconds{0}) == future_status::timeout);
 #endif // ^^^ no workaround ^^^
         p.set_value(1729);
-#if 0 // TRANSITION, VSO-1271718 (Standard Library Header Units ICE with C++20 chrono)
+#ifdef MSVC_INTERNAL_TESTING // TRANSITION, VSO-1271718 (Standard Library Header Units ICE with C++20 chrono)
         assert(f.wait_for(chrono::seconds{0}) == future_status::ready);
 #endif // ^^^ no workaround ^^^
         assert(f.get() == 1729);
@@ -760,7 +760,7 @@ int main() {
                 }
                 l.count_down(); // tell main() that we're done
                 while (!token.stop_requested()) {
-#if 0 // TRANSITION, VSO-1271718 (Standard Library Header Units ICE with C++20 chrono)
+#ifdef MSVC_INTERNAL_TESTING // TRANSITION, VSO-1271718 (Standard Library Header Units ICE with C++20 chrono)
                     this_thread::sleep_for(10ms); // not a timing assumption; avoids spinning furiously
 #endif // ^^^ no workaround ^^^
                 }