diff --git a/test/function_n_test.cpp b/test/function_n_test.cpp
index e3a1518..0de9202 100644
--- a/test/function_n_test.cpp
+++ b/test/function_n_test.cpp
@@ -523,8 +523,6 @@ test_zero_args()
   BOOST_TEST(i1);
   i1.clear();
   BOOST_TEST(!i1);
-
-  BOOST_TEST(i1.target_type() == typeid(void));
 }
 
 static void
@@ -544,14 +542,9 @@ test_one_arg()
   add_to_obj add_to(5);
   function1<int, int> f2(add_to);
   BOOST_TEST(f2(3) == 8);
-  BOOST_TEST(f2.target_type() == typeid(add_to_obj));
-  function_cast<add_to_obj>(f2).value = 12;
-  BOOST_TEST(f2(3) == 15);
 
   const function1<int, int> cf2(add_to);
   BOOST_TEST(cf2(3) == 8);
-  BOOST_TEST(cf2.target_type() == typeid(add_to_obj));  
-  BOOST_TEST(function_cast<add_to_obj>(cf2).value == 5);
 }
 
 static void
diff --git a/test/function_test.cpp b/test/function_test.cpp
index 236a80c..2835a1e 100644
--- a/test/function_test.cpp
+++ b/test/function_test.cpp
@@ -523,8 +523,6 @@ test_zero_args()
   BOOST_TEST(i1);
   i1.clear();
   BOOST_TEST(!i1);
-
-  BOOST_TEST(i1.target_type() == typeid(void));
 }
 
 static void
@@ -544,14 +542,9 @@ test_one_arg()
   add_to_obj add_to(5);
   function<int, int> f2(add_to);
   BOOST_TEST(f2(3) == 8);
-  BOOST_TEST(f2.target_type() == typeid(add_to_obj));
-  function_cast<add_to_obj>(f2).value = 12;
-  BOOST_TEST(f2(3) == 15);
 
   const function<int, int> cf2(add_to);
   BOOST_TEST(cf2(3) == 8);
-  BOOST_TEST(cf2.target_type() == typeid(add_to_obj));  
-  BOOST_TEST(function_cast<add_to_obj>(cf2).value == 5);
 }
 
 static void