diff --git a/lib/discourse.rb b/lib/discourse.rb
index 8252b5da766..4d08038deec 100644
--- a/lib/discourse.rb
+++ b/lib/discourse.rb
@@ -82,7 +82,7 @@ module Discourse
     @anonymous_top_menu_items ||= Discourse.anonymous_filters + [:category, :categories, :top]
   end
 
-  PIXEL_RATIOS ||= [1, 2, 3]
+  PIXEL_RATIOS ||= [1, 1.5, 2, 3]
 
   def self.avatar_sizes
     # TODO: should cache these when we get a notification system for site settings