diff --git a/ChangeLog b/ChangeLog
index bcb10d5d1f..cbd2963aaa 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,7 @@
+Thu Jun 19 11:48:33 2008  Koichi Sasada  <ko1@atdot.net>
+
+	* test/ruby/test_enumerator.rb: fix to skip "with_memo" test.
+
 Thu Jun 19 11:40:55 2008  Koichi Sasada  <ko1@atdot.net>
 
 	* vm_insnhelper.c (vm_throw): fix "return" process from "lambda".
diff --git a/test/ruby/test_enumerator.rb b/test/ruby/test_enumerator.rb
index 8645b7acf7..07a54e8233 100644
--- a/test/ruby/test_enumerator.rb
+++ b/test/ruby/test_enumerator.rb
@@ -93,6 +93,7 @@ class TestEnumerator < Test::Unit::TestCase
 
   def test_with_memo
     r = 1..10
+    return unless r.each.respond_to? :with_memo
     assert_equal([55, 3628800], (1..10).each.with_memo([0,1]) {|i, memo|
         memo[0] += i
         memo[1] *= i