diff --git a/lib/rake/ext/pathname.rb b/lib/rake/ext/pathname.rb
deleted file mode 100644
index 30130cd1a..000000000
--- a/lib/rake/ext/pathname.rb
+++ /dev/null
@@ -1,25 +0,0 @@
-require "rake/ext/core"
-require "pathname"
-
-class Pathname
-
-  rake_extension("ext") do
-    # Return a new Pathname with <tt>String#ext</tt> applied to it.
-    #
-    # This Pathname extension comes from Rake
-    def ext(newext="")
-      Pathname.new(Rake.from_pathname(self).ext(newext))
-    end
-  end
-
-  rake_extension("pathmap") do
-    # Apply the pathmap spec to the Pathname, returning a
-    # new Pathname with the modified paths.  (See String#pathmap for
-    # details.)
-    #
-    # This Pathname extension comes from Rake
-    def pathmap(spec=nil, &block)
-      Pathname.new(Rake.from_pathname(self).pathmap(spec, &block))
-    end
-  end
-end
diff --git a/test/test_rake_pathname_extensions.rb b/test/test_rake_pathname_extensions.rb
deleted file mode 100644
index c0d8410d6..000000000
--- a/test/test_rake_pathname_extensions.rb
+++ /dev/null
@@ -1,15 +0,0 @@
-require File.expand_path("../helper", __FILE__)
-require "rake/ext/pathname"
-
-class TestRakePathnameExtensions < Rake::TestCase
-  def test_ext_works_on_pathnames
-    pathname = Pathname.new("abc.foo")
-    assert_equal Pathname.new("abc.bar"), pathname.ext("bar")
-  end
-
-  def test_path_map_works_on_pathnames
-    pathname = Pathname.new("this/is/a/dir/abc.rb")
-    assert_equal Pathname.new("abc.rb"), pathname.pathmap("%f")
-    assert_equal Pathname.new("this/is/a/dir"), pathname.pathmap("%d")
-  end
-end