diff --git a/lib/rake/task.rb b/lib/rake/task.rb
index 9e1d3d791..5e4dd64d4 100644
--- a/lib/rake/task.rb
+++ b/lib/rake/task.rb
@@ -257,6 +257,10 @@ def add_description(description)
       add_comment(comment) if comment && ! comment.empty?
     end
 
+    def comment=(comment)
+      add_comment(comment)
+    end
+
     def add_comment(comment)
       @comments << comment unless @comments.include?(comment)
     end
diff --git a/lib/rake/version.rb b/lib/rake/version.rb
index fdec986a6..2817720ff 100644
--- a/lib/rake/version.rb
+++ b/lib/rake/version.rb
@@ -1,5 +1,5 @@
 module Rake
-  VERSION = '10.1.0.beta.2'
+  VERSION = '10.1.0.beta.3'
 
   module Version # :nodoc: all
     MAJOR, MINOR, BUILD, *OTHER = Rake::VERSION.split '.'
diff --git a/test/test_rake_task.rb b/test/test_rake_task.rb
index 48a992c46..2ab995a6f 100644
--- a/test/test_rake_task.rb
+++ b/test/test_rake_task.rb
@@ -307,6 +307,12 @@ def test_investigation_output
     assert_match(/pre-requisites:\s*--t[23]/, out)
   end
 
+  # NOTE: Rail-ties uses comment=.
+  def test_comment_setting
+    t = task(:t, :name, :rev)
+    t.comment = "A Comment"
+    assert_equal "A Comment", t.comment
+  end
 
   def test_comments_with_sentences
     desc "Comment 1. Comment 2."