diff --git a/ruby/gilded_rose.rb b/ruby/gilded_rose.rb
index 13c4765e..e3de9654 100644
--- a/ruby/gilded_rose.rb
+++ b/ruby/gilded_rose.rb
@@ -39,19 +39,19 @@ class GildedRose
         item.sell_in = item.sell_in - 1
       end
       if item.sell_in < 0
-        if item.name != AGED_BRIE
-          if item.name != BACKSTAGE_PASS
+        if item.name == AGED_BRIE
+          if item.quality < 50
+            increment_item_quality(item)
+          end
+        else
+          if item.name == BACKSTAGE_PASS
+            item.quality = 0
+          else
             if item.quality > 0
               if item.name != SULFURAS
                 item.quality = item.quality - 1
               end
             end
-          else
-            item.quality = item.quality - item.quality
-          end
-        else
-          if item.quality < 50
-            increment_item_quality(item)
           end
         end
       end