diff --git a/ChangeLog b/ChangeLog
index 26db3bcd87..4eb5e2eb31 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,7 @@
+Thu Sep 18 15:02:15 2014  NAKAMURA Usaku  <usa@ruby-lang.org>
+
+	* test/rubygems/test_gem_specification.rb: '/' is not always the root.
+
 Thu Sep 18 09:36:37 2014  Scott Francis  <scott.francis@shopify.com>
 
 	* vm_method.c (Init_Method): make global method cache size
diff --git a/test/rubygems/test_gem_specification.rb b/test/rubygems/test_gem_specification.rb
index 146e249381..dd626d9292 100644
--- a/test/rubygems/test_gem_specification.rb
+++ b/test/rubygems/test_gem_specification.rb
@@ -1820,7 +1820,7 @@ dependencies: []
 
       @ext.require_paths = 'lib'
 
-      assert_equal ['/foo/ext-1', 'lib'], @ext.require_paths
+      assert_equal [File.expand_path('/foo/ext-1'), 'lib'], @ext.require_paths
     end
   ensure
     class << Gem