diff --git a/app/models/comment.rb b/app/models/comment.rb
index a2bbc5fa..033f97e5 100644
--- a/app/models/comment.rb
+++ b/app/models/comment.rb
@@ -43,11 +43,8 @@ def like_by(user)
     end
   end
 
-  def liked(how_much)
-    unless how_much.nil?
-      increment_likes_cache(how_much)
-      commented_callback
-    end
+  def liked(how_much=nil)
+    commented_callback unless how_much.nil?
   end
 
   def liked_by?(user)