diff --git a/app/models/series.rb b/app/models/series.rb
index b50a38ee..ce01bbe3 100644
--- a/app/models/series.rb
+++ b/app/models/series.rb
@@ -10,7 +10,7 @@ class Series
     values.each(&block)
   end
 
-  attr_reader :start_date, :end_date, :interval, :trend, :values, :favorable_direction
+  attr_reader :start_date, :end_date, :interval, :values, :favorable_direction
 
   Value = Struct.new(
     :date,