diff --git a/app/models/pd_regime.rb b/app/models/pd_regime.rb
index <HASH>..<HASH> 100644
--- a/app/models/pd_regime.rb
+++ b/app/models/pd_regime.rb
@@ -3,7 +3,7 @@ class PdRegime < ActiveRecord::Base
   belongs_to :patient
 
   has_many :pd_regime_bags
-  has_many :bag_types, through: :pd_regime_bag
+  has_many :bag_types, through: :pd_regime_bags
 
   accepts_nested_attributes_for :pd_regime_bags
 
diff --git a/spec/models/pd_regime_spec.rb b/spec/models/pd_regime_spec.rb
index <HASH>..<HASH> 100644
--- a/spec/models/pd_regime_spec.rb
+++ b/spec/models/pd_regime_spec.rb
@@ -1,10 +1,10 @@
 require 'rails_helper'
 
-RSpec.describe PdRegime, :type => :model do
+RSpec.describe PdRegime, type: :model do
 
   it { should belong_to :patient }
 
-  it { should have_many :pd_regime_bag }
-  it { should have_many(:bag_types).through(:pd_regime_bag) }
+  it { should have_many :pd_regime_bags }
+  it { should have_many(:bag_types).through(:pd_regime_bags) }
 
 end
Fix PdRegime pd_regime_bags association names