diff --git a/app/models/spree/adjustment.rb b/app/models/spree/adjustment.rb
index e0a4c1c5e57..57ef3d549c7 100644
--- a/app/models/spree/adjustment.rb
+++ b/app/models/spree/adjustment.rb
@@ -42,11 +42,6 @@ class Adjustment < ApplicationRecord
     belongs_to :order, class_name: "Spree::Order"
     belongs_to :tax_category, class_name: 'Spree::TaxCategory'
 
-    belongs_to :tax_rate, -> { where spree_adjustments: { originator_type: 'Spree::TaxRate' } },
-               foreign_key: 'originator_id'
-    belongs_to :voucher, -> { where spree_adjustments: { originator_type: 'Voucher' } },
-               foreign_key: 'originator_id', inverse_of: :adjustments
-
     validates :label, presence: true
     validates :amount, numericality: true
 
diff --git a/spec/models/spree/adjustment_spec.rb b/spec/models/spree/adjustment_spec.rb
index bbe7b8f2453..66d243fd590 100644
--- a/spec/models/spree/adjustment_spec.rb
+++ b/spec/models/spree/adjustment_spec.rb
@@ -11,14 +11,10 @@ module Spree
       it { is_expected.to have_one(:metadata) }
       it { is_expected.to have_many(:adjustments) }
 
-      it { is_expected.to belong_to(:adjustable) }
-
       it { is_expected.to belong_to(:adjustable) }
       it { is_expected.to belong_to(:originator) }
       it { is_expected.to belong_to(:order) }
       it { is_expected.to belong_to(:tax_category) }
-      it { is_expected.to belong_to(:tax_rate) }
-      it { is_expected.to belong_to(:voucher) }
     end
 
     describe "scopes" do