diff --git a/ChangeLog b/ChangeLog
index a527e7bf2d..f5e5ff2980 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,8 @@
+Mon Jun 16 09:43:27 2008  Akinori MUSHA  <knu@iDaemons.org>
+
+	* enumerator.c (enumerator_with_object, Init_Enumerator):
+	  Temporarily back out with_memo, for which we need a better name.
+
 Mon Jun 16 07:14:48 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
 
 	* ext/stringio/stringio.c (strio_readline, strio_each)
diff --git a/doc/NEWS b/doc/NEWS
index d1c14dd0c8..db76546fbb 100644
--- a/doc/NEWS
+++ b/doc/NEWS
@@ -107,7 +107,6 @@ Compatible
     * Enumerable and Enumerator
           o Enumerable#map,collect_all called without a block returns
             an enumerator.
-          o Enumerable::Enumerator#with_memo
     * Regexp#match, String#match
           o Regexp#match, String#match
     * Fiber: coroutines/micro-threads
diff --git a/enumerator.c b/enumerator.c
index 3f52626706..c39a48ef79 100644
--- a/enumerator.c
+++ b/enumerator.c
@@ -357,15 +357,15 @@ enumerator_with_index(VALUE obj)
 }
 
 static VALUE
-enumerator_with_memo_i(VALUE val, VALUE memo)
+enumerator_with_object_i(VALUE val, VALUE memo)
 {
     return rb_yield_values(2, val, memo);
 }
 
 /*
  *  call-seq:
- *    e.with_memo(obj) {|(*args), memo_obj| ... }
- *    e.with_memo(obj)
+ *    e.with_object(obj) {|(*args), memo_obj| ... }
+ *    e.with_object(obj)
  *
  *  Iterates the given block for each element with an arbitrary
  *  object given, and returns the memo object.
@@ -374,7 +374,7 @@ enumerator_with_memo_i(VALUE val, VALUE memo)
  *
  */
 static VALUE
-enumerator_with_memo(VALUE obj, VALUE memo)
+enumerator_with_object(VALUE obj, VALUE memo)
 {
     struct enumerator *e;
     int argc = 0;
@@ -387,7 +387,7 @@ enumerator_with_memo(VALUE obj, VALUE memo)
 	argv = RARRAY_PTR(e->args);
     }
     rb_block_call(e->obj, e->meth, argc, argv,
-		  enumerator_with_memo_i, memo);
+		  enumerator_with_object_i, memo);
 
     return memo;
 }
@@ -489,7 +489,9 @@ Init_Enumerator(void)
     rb_define_method(rb_cEnumerator, "each", enumerator_each, 0);
     rb_define_method(rb_cEnumerator, "each_with_index", enumerator_with_index, 0);
     rb_define_method(rb_cEnumerator, "with_index", enumerator_with_index, 0);
-    rb_define_method(rb_cEnumerator, "with_memo", enumerator_with_memo, 1);
+#if 0
+    rb_define_method(rb_cEnumerator, "with_object", enumerator_with_object, 1);
+#endif
     rb_define_method(rb_cEnumerator, "next", enumerator_next, 0);
     rb_define_method(rb_cEnumerator, "rewind", enumerator_rewind, 0);