diff --git a/ChangeLog b/ChangeLog
index 8fc83b20fe..be0ec9d477 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,7 @@
+Tue Jan 15 10:40:18 2013  Marc-Andre Lafortune  <ruby-core@marc-andre.ca>
+
+	* test_lazy_enumerator: Test that map & flat_map also require a block
+
 Tue Jan 15 09:22:47 2013  KOSAKI Motohiro  <kosaki.motohiro@gmail.com>
 
 	* thread_pthread.c (gvl_init): Reset gvl.wait_yield explicitly when
diff --git a/test/ruby/test_lazy_enumerator.rb b/test/ruby/test_lazy_enumerator.rb
index f04d26ecbe..acd4843afb 100644
--- a/test/ruby/test_lazy_enumerator.rb
+++ b/test/ruby/test_lazy_enumerator.rb
@@ -370,7 +370,7 @@ EOS
   end
 
   def test_require_block
-    %i[select reject drop_while take_while].each do |method|
+    %i[select reject drop_while take_while map flat_map].each do |method|
       assert_raise(ArgumentError){ [].lazy.send(method) }
     end
   end