diff --git a/app/models/schedule.rb b/app/models/schedule.rb
index 0f7a446..514b591 100644
--- a/app/models/schedule.rb
+++ b/app/models/schedule.rb
@@ -1,66 +1,66 @@
 # Schedule model is the application representation of Bacula's Schedule.
 # It has references to a host and multiple schedule run in order to provide
 # the desired Bacula configuration
 class Schedule < ActiveRecord::Base
   establish_connection ARCHIVING_CONF
 
-  has_many :schedule_runs
+  has_many :schedule_runs, dependent: :destroy
 
   belongs_to :host
   has_many :job_templates
 
   validates :name, presence: true
   validates :name, uniqueness: { scope: :host }
   validates_with NameValidator
 
   accepts_nested_attributes_for :schedule_runs, allow_destroy: true
 
   # Constructs an array where each element is a line for the Schedule's bacula config
   #
   # @return [Array]
   def to_bacula_config_array
     ['Schedule {'] +
       ["  Name = \"#{name_for_config}\""] +
       schedule_runs.map {|r| "  Run = #{r.schedule_line}" } +
       ['}']
   end
 
   # Provide a human readable projection of the schedule
   #
   # @return [String]
   def human_readable
     schedule_runs.map(&:human_readable).join("\n")
   end
 
   # Generates a name that will be used for the configuration file.
   # It is the name that will be sent to Bacula through the configuration
   # files.
   #
   # @return [String]
   def name_for_config
     [host.name, name].join(' ')
   end
 
   # Returns the hosts that have enabled jobs that use this schedule
   #
   # @return [ActiveRecord::Colletion] the participating hosts
   def participating_hosts
     Host.joins(:job_templates).where(job_templates: { enabled: true, schedule_id: id }).uniq
   end
 
   # Creates a default schedule resource for a simple config
   def default_resource(time_hex, day, hour, minute)
     time = [hour, minute].map { |x| x.to_s.rjust(2, '0') }.join(':')
     full_day = "first #{day}"
     diff_days = "second-fifth #{day}"
     inc_days = (SimpleConfiguration::DAYS.values - [day]).join(',')
 
     self.name = "daily_at_#{time.gsub(':','_')}_#{time_hex}"
     save!
     self.schedule_runs.create(level: :full, time: time, day: full_day)
     self.schedule_runs.create(level: :differential, time: time, day: diff_days)
     self.schedule_runs.create(level: :incremental , time: time, day: inc_days)
 
     self
   end
 end