diff --git a/fatal/type/test/foreach_test.cpp b/fatal/type/test/foreach_test.cpp
index 4f8a9176..427f6d1f 100644
--- a/fatal/type/test/foreach_test.cpp
+++ b/fatal/type/test/foreach_test.cpp
@@ -60,7 +60,7 @@ using replicate = typename replicate_impl<T, make_index_sequence<N>>::type;
 
 FATAL_TEST(foreach_test, very_long_type_list) {
   struct foo { static std::string get() { return "foo"; } };
-  constexpr auto size = 1ULL << 12;
+  constexpr auto size = 1ULL << 8;
   using types = replicate<foo, size>;
   static_assert(fatal::size<types>::value == size, "size mismatch");