diff --git a/tests/Generalization.test.cpp b/tests/Generalization.test.cpp
index 901461ae..dabdf258 100644
--- a/tests/Generalization.test.cpp
+++ b/tests/Generalization.test.cpp
@@ -112,7 +112,7 @@ TEST_CASE_FIXTURE(GeneralizationFixture, "dont_traverse_into_class_types_when_ge
 {
     auto [propTy, _] = freshType();
 
-    TypeId cursedClass = arena.addType(ClassType{"Cursed", {{"oh_no", Property::readonly(propTy)}}, std::nullopt, std::nullopt, {}, {}, ""});
+    TypeId cursedClass = arena.addType(ClassType{"Cursed", {{"oh_no", Property::readonly(propTy)}}, std::nullopt, std::nullopt, {}, {}, "", {}});
 
     auto genClass = generalize(cursedClass);
     REQUIRE(genClass);