diff --git a/test/unordered/fwd_set_test.cpp b/test/unordered/fwd_set_test.cpp
index fda2b71f..fd4be9ba 100644
--- a/test/unordered/fwd_set_test.cpp
+++ b/test/unordered/fwd_set_test.cpp
@@ -133,8 +133,10 @@ typedef boost::unordered_multiset<int> int_multiset;
 
 UNORDERED_AUTO_TEST (use_fwd_declared_trait_without_definition) {
   BOOST_TEST(sizeof(is_unordered_set_impl((int_set*)0)) == sizeof(true_type));
+#ifdef BOOST_UNORDERED_FOA_TESTS
   BOOST_TEST(
     sizeof(is_unordered_set_impl((int_node_set*)0)) == sizeof(true_type));
+#endif
 }
 
 #ifdef BOOST_UNORDERED_FOA_TESTS