diff --git a/app/helpers/spree/base_helper.rb b/app/helpers/spree/base_helper.rb
index 77e8378fac..ecf0d2cc6e 100644
--- a/app/helpers/spree/base_helper.rb
+++ b/app/helpers/spree/base_helper.rb
@@ -3,7 +3,7 @@
 module Spree
   module BaseHelper
     def available_countries
-      checkout_zone = Zone.find_by(name: Spree::Config[:checkout_zone])
+      checkout_zone = Zone.find_by(name: ENV.fetch("CHECKOUT_ZONE", nil))
 
       countries = if checkout_zone && checkout_zone.kind == 'country'
                     checkout_zone.countries
diff --git a/app/models/spree/app_configuration.rb b/app/models/spree/app_configuration.rb
index f624928703..ca6e71f17d 100644
--- a/app/models/spree/app_configuration.rb
+++ b/app/models/spree/app_configuration.rb
@@ -33,9 +33,6 @@ module Spree
     preference :allow_backorder_shipping, :boolean, default: false
     preference :allow_checkout_on_gateway_error, :boolean, default: false
     preference :allow_guest_checkout, :boolean, default: true
-    # Replace with the name of a zone if you would like to limit the countries
-    preference :checkout_zone, :string, default: nil
-    preference :currency, :string, default: "USD"
     preference :currency_decimal_mark, :string, default: "."
     preference :currency_symbol_position, :string, default: "before"
     preference :currency_thousands_separator, :string, default: ","
diff --git a/config/application.rb b/config/application.rb
index 19cd559d97..a6e2dc3398 100644
--- a/config/application.rb
+++ b/config/application.rb
@@ -81,23 +81,6 @@ module Openfoodnetwork
       ]
     end
 
-    # Settings dependent on locale
-    #
-    # We need to set this config before the promo environment gets loaded and
-    # after the spree environment gets loaded...
-    # This is because Spree uses `Spree::Config` while evaluating classes :scream:
-    #
-    # https://github.com/spree/spree/blob/2-0-stable/core/app/models/spree/calculator/per_item.rb#L6
-    #
-    # TODO: move back to spree initializer once we upgrade to a more recent version
-    #       of Spree
-    initializer 'ofn.spree_locale_settings', before: 'spree.promo.environment' do |app|
-      Rails.application.reloader.to_prepare do
-        Spree::Config['checkout_zone'] = ENV['CHECKOUT_ZONE']
-        Spree::Config['currency'] = ENV['CURRENCY']
-      end
-    end
-
     initializer "load_spree_calculators" do |app|
       # Register Spree calculators
       Rails.application.reloader.to_prepare do
diff --git a/db/migrate/20250103043626_delete_checkout_zone_and_currency_preferences.rb b/db/migrate/20250103043626_delete_checkout_zone_and_currency_preferences.rb
new file mode 100644
index 0000000000..0b6f5939eb
--- /dev/null
+++ b/db/migrate/20250103043626_delete_checkout_zone_and_currency_preferences.rb
@@ -0,0 +1,13 @@
+# frozen_string_literal: true
+
+class DeleteCheckoutZoneAndCurrencyPreferences < ActiveRecord::Migration[7.0]
+  def up
+    execute <<~SQL
+      DELETE FROM spree_preferences
+      WHERE key IN (
+        '/spree/app_configuration/checkout_zone',
+        '/spree/app_configuration/currency'
+      )
+    SQL
+  end
+end
diff --git a/spec/base_spec_helper.rb b/spec/base_spec_helper.rb
index 026e538315..c4cb929a7e 100644
--- a/spec/base_spec_helper.rb
+++ b/spec/base_spec_helper.rb
@@ -235,15 +235,11 @@ RSpec.configure do |config|
   end
 
   default_country_id = DefaultCountry.id
-  checkout_zone = Spree::Config[:checkout_zone]
-  currency = Spree::Config[:currency]
   # Ensure we start with consistent config settings
   config.before(:each) do
     reset_spree_preferences do |spree_config|
       # These are all settings that differ from Spree's defaults
       spree_config.default_country_id = default_country_id
-      spree_config.checkout_zone = checkout_zone
-      spree_config.currency = currency
       spree_config.shipping_instructions = true
     end
     CurrentConfig.clear_all
diff --git a/spec/helpers/spree/base_helper_spec.rb b/spec/helpers/spree/base_helper_spec.rb
index 35511de2be..050b1b61f2 100644
--- a/spec/helpers/spree/base_helper_spec.rb
+++ b/spec/helpers/spree/base_helper_spec.rb
@@ -10,11 +10,12 @@ RSpec.describe Spree::BaseHelper do
 
     before do
       3.times { create(:country) }
+      allow(ENV).to receive(:fetch).and_call_original
     end
 
     context "with no checkout zone defined" do
       before do
-        Spree::Config[:checkout_zone] = nil
+        allow(ENV).to receive(:fetch).and_return(nil)
       end
 
       it "return complete list of countries" do
@@ -27,7 +28,7 @@ RSpec.describe Spree::BaseHelper do
         before do
           @country_zone = create(:zone, name: "CountryZone")
           @country_zone.members.create(zoneable: country)
-          Spree::Config[:checkout_zone] = @country_zone.name
+          allow(ENV).to receive(:fetch).and_return(@country_zone.name)
         end
 
         it "return only the countries defined by the checkout zone" do
@@ -40,7 +41,7 @@ RSpec.describe Spree::BaseHelper do
           state_zone = create(:zone, name: "StateZone")
           state = create(:state, country:)
           state_zone.members.create(zoneable: state)
-          Spree::Config[:checkout_zone] = state_zone.name
+          allow(ENV).to receive(:fetch).and_return(state_zone.name)
         end
 
         it "return complete list of countries" do
diff --git a/spec/lib/spree/money_spec.rb b/spec/lib/spree/money_spec.rb
index e79443e920..a32d8576c6 100644
--- a/spec/lib/spree/money_spec.rb
+++ b/spec/lib/spree/money_spec.rb
@@ -7,7 +7,6 @@ RSpec.describe Spree::Money do
 
   before do
     configure_spree_preferences do |config|
-      config.currency = "USD"
       config.currency_symbol_position = :before
       config.display_currency = false
     end
@@ -97,7 +96,6 @@ RSpec.describe Spree::Money do
   context "EUR" do
     before do
       configure_spree_preferences do |config|
-        config.currency = "EUR"
         config.currency_symbol_position = :after
         config.display_currency = false
       end
diff --git a/spec/models/spree/adjustment_spec.rb b/spec/models/spree/adjustment_spec.rb
index 9682d045ee..abf3bcfb40 100644
--- a/spec/models/spree/adjustment_spec.rb
+++ b/spec/models/spree/adjustment_spec.rb
@@ -133,7 +133,7 @@ module Spree
         before { Spree::Config[:display_currency] = true }
 
         it "shows the currency" do
-          expect(adjustment.display_amount.to_s).to eq "$10.55 #{Spree::Config[:currency]}"
+          expect(adjustment.display_amount.to_s).to eq "$10.55 AUD"
         end
       end
 
@@ -167,7 +167,7 @@ module Spree
 
     context '#currency' do
       it 'returns the globally configured currency' do
-        expect(adjustment.currency).to eq Spree::Config[:currency]
+        expect(adjustment.currency).to eq "AUD"
       end
     end
 
diff --git a/spec/models/spree/order_spec.rb b/spec/models/spree/order_spec.rb
index 00a0cdb621..5abc19da12 100644
--- a/spec/models/spree/order_spec.rb
+++ b/spec/models/spree/order_spec.rb
@@ -516,7 +516,7 @@ RSpec.describe Spree::Order do
       before { order.currency = nil }
 
       it "returns the globally configured currency" do
-        expect(order.currency).to eq Spree::Config[:currency]
+        expect(order.currency).to eq "AUD"
       end
     end
   end
diff --git a/spec/models/spree/variant_spec.rb b/spec/models/spree/variant_spec.rb
index 70068b4164..73754aaa72 100644
--- a/spec/models/spree/variant_spec.rb
+++ b/spec/models/spree/variant_spec.rb
@@ -292,7 +292,7 @@ RSpec.describe Spree::Variant do
   context "#currency" do
     it "returns the globally configured currency" do
       variant.save!
-      expect(variant.currency).to eq Spree::Config[:currency]
+      expect(variant.currency).to eq "AUD"
     end
   end
 
@@ -309,7 +309,7 @@ RSpec.describe Spree::Variant do
 
       it "populates cost currency with the default value on save" do
         variant.save!
-        expect(variant.cost_currency).to eq Spree::Config[:currency]
+        expect(variant.cost_currency).to eq "AUD"
       end
     end
   end
diff --git a/spec/system/admin/reports_spec.rb b/spec/system/admin/reports_spec.rb
index 072c546646..2d689ff7a0 100644
--- a/spec/system/admin/reports_spec.rb
+++ b/spec/system/admin/reports_spec.rb
@@ -737,7 +737,7 @@ RSpec.describe '
        sku,
        description,
        quantity,
-       amount.to_s, '', opts[:account_code], tax_type, '', '', '', '', Spree::Config.currency,
+       amount.to_s, '', opts[:account_code], tax_type, '', '', '', '', "AUD",
        '', 'N']
     end
   end