diff --git a/include/pybind11/pybind11.h b/include/pybind11/pybind11.h
index 9d1af4622..b4fdccfce 100644
--- a/include/pybind11/pybind11.h
+++ b/include/pybind11/pybind11.h
@@ -1848,7 +1848,6 @@ struct property_cpp_function<
 //       Running the pybind11 unit tests with smart_holder as the default holder is to ensure
 //       that `py::smart_holder` / `py::classh` is backward-compatible with all pre-existing
 //       functionality.
-#    define PYBIND11_ACTUALLY_USING_SMART_HOLDER_AS_DEFAULT
 template <typename>
 using default_holder_type = smart_holder;
 #else
diff --git a/tests/test_class.cpp b/tests/test_class.cpp
index e4c0328db..87208d51d 100644
--- a/tests/test_class.cpp
+++ b/tests/test_class.cpp
@@ -636,7 +636,7 @@ CHECK_NOALIAS(8);
 CHECK_HOLDER(1, unique);
 CHECK_HOLDER(2, unique);
 CHECK_HOLDER(3, unique);
-#ifndef PYBIND11_ACTUALLY_USING_SMART_HOLDER_AS_DEFAULT
+#ifndef PYBIND11_USE_SMART_HOLDER_AS_DEFAULT
 CHECK_HOLDER(4, unique);
 CHECK_HOLDER(5, unique);
 #endif