diff --git a/db/migrate/20130622095040_move_weekly_tasks.rb b/db/migrate/20130622095040_move_weekly_tasks.rb
index be316c5c..f9f363fd 100644
--- a/db/migrate/20130622095040_move_weekly_tasks.rb
+++ b/db/migrate/20130622095040_move_weekly_tasks.rb
@@ -35,6 +35,8 @@ class MoveWeeklyTasks < ActiveRecord::Migration
 
 private
   def weekly_task?(workgroup, task)
+    return false if task.due_date.nil?
+    
     group_task = {
       weekday: workgroup.weekday,
       name: workgroup.task_name,