diff --git a/ChangeLog b/ChangeLog
index cf4d308b44..6fd8185b41 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,8 @@
+Fri Jul 17 15:36:40 2015  yui-knk  <spiketeika@gmail.com>
+
+	* test/ruby/test_range.rb (test_first_last): Add assertions to
+	  test of `Range#last` with exclude_end true case.  [Fix GH-970]
+
 Fri Jul 17 09:59:14 2015  Eric Wong  <e@80x24.org>
 
 	* thread.c (rb_thread_alone): simplify
diff --git a/test/ruby/test_range.rb b/test/ruby/test_range.rb
index 791764b355..9b8bdca6e3 100644
--- a/test/ruby/test_range.rb
+++ b/test/ruby/test_range.rb
@@ -265,7 +265,10 @@ class TestRange < Test::Unit::TestCase
     assert_equal([0, 1, 2], (0...10).first(3))
     assert_equal([7, 8, 9], (0...10).last(3))
     assert_equal(0, (0...10).first)
+    assert_equal(10, (0...10).last)
     assert_equal("a", ("a"..."c").first)
+    assert_equal("c", ("a"..."c").last)
+    assert_equal(0, (2...0).last)
   end
 
   def test_to_s