diff --git a/lib/merit/point_rules.rb b/lib/merit/point_rules.rb
index 780d0b5..5bb4221 100644
--- a/lib/merit/point_rules.rb
+++ b/lib/merit/point_rules.rb
@@ -19,6 +19,14 @@ module Merit
         :description => _('Point weight for article author of a comment'),
         :default_weight => 50
       },
+      :comment_article => {
+        :action => 'comment#create',
+        :undo_action => 'comment#destroy',
+        :to => lambda {|comment| comment.source},
+        :value => 1,
+        :description => _('Point weight for source article of a comment'),
+        :default_weight => 50
+      },
       :article_author => {
         :action => 'article#create',
         :undo_action => 'article#destroy',
diff --git a/test/unit/comment_test.rb b/test/unit/comment_test.rb
index 1517877..c9e553d 100644
--- a/test/unit/comment_test.rb
+++ b/test/unit/comment_test.rb
@@ -100,4 +100,10 @@ class CommentTest < ActiveSupport::TestCase
     end
   end
 
+  should 'add merit points to source article when create a comment' do
+    assert_difference 'article.points(:category => :comment_article)', 50 do
+      create(Comment, :source => article, :author_id => person.id)
+    end
+  end
+
 end
--
libgit2 0.21.2