diff --git a/ChangeLog b/ChangeLog
index 65a34de650..8af4911def 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,8 @@
+Sat Nov  3 12:06:15 2012  Kouhei Sutou  <kou@cozmixng.org>
+
+	* test/rexml/test_xml_declaration.rb (TestXmlDeclaration#test_*):
+	  Remove needless prefix from test names.
+
 Sat Nov  3 12:04:52 2012  Kouhei Sutou  <kou@cozmixng.org>
 
 	* test/rexml/test_xml_declaration_parent_child.rb: Rename to ...
diff --git a/test/rexml/test_xml_declaration.rb b/test/rexml/test_xml_declaration.rb
index d883e105c1..d58f9f08ba 100644
--- a/test/rexml/test_xml_declaration.rb
+++ b/test/rexml/test_xml_declaration.rb
@@ -1,4 +1,5 @@
 #!/usr/bin/env ruby
+# -*- coding: utf-8 -*-
 #
 #  Created by Henrik Mårtensson on 2007-02-18.
 #  Copyright (c) 2007. All rights reserved.
@@ -18,15 +19,15 @@ class TestXmlDeclaration < Test::Unit::TestCase
     @xml_declaration = @doc.children[0]
   end
 
-  def test_xml_declaration_is_first_child
+  def test_is_first_child
     assert_kind_of(REXML::XMLDecl, @xml_declaration)
   end
 
-  def test_xml_declaration_has_document_as_parent
+  def test_has_document_as_parent
    assert_kind_of(REXML::Document, @xml_declaration.parent)
   end
 
-  def test_xml_declaration_has_sibling
+  def test_has_sibling
     assert_kind_of(REXML::XMLDecl, @root.previous_sibling.previous_sibling)
     assert_kind_of(REXML::Element, @xml_declaration.next_sibling.next_sibling)
   end