diff --git a/app/models/album.rb b/app/models/album.rb
index 5633e5e..2f1fae9 100644
--- a/app/models/album.rb
+++ b/app/models/album.rb
@@ -1,4 +1,4 @@
 class Album < ActiveRecord::Base
   belongs_to :artist
-  has_many :tracks, :order => 'bonus ASC, position ASC'
+  has_many :tracks, :order => 'bonus ASC, position ASC', :dependent => :destroy
 end
diff --git a/app/models/artist.rb b/app/models/artist.rb
index 2332d73..127f91c 100644
--- a/app/models/artist.rb
+++ b/app/models/artist.rb
@@ -1,3 +1,3 @@
 class Artist < ActiveRecord::Base
-  has_many :albums, :order => 'year ASC, id ASC'
+  has_many :albums, :order => 'year ASC, id ASC', :dependent => :destroy
 end