diff --git a/promotions/app/models/solidus_promotions/order_adjuster/discount_order.rb b/promotions/app/models/solidus_promotions/order_adjuster/discount_order.rb
index 763778da7a..bf234b3c1a 100644
--- a/promotions/app/models/solidus_promotions/order_adjuster/discount_order.rb
+++ b/promotions/app/models/solidus_promotions/order_adjuster/discount_order.rb
@@ -14,7 +14,7 @@ def initialize(order, promotions, dry_run: false)
       def call
         return order if order.shipped?
 
-        SolidusPromotions::Promotion.ordered_lanes.each_key do |lane|
+        SolidusPromotions::Promotion.ordered_lanes.each do |lane|
           lane_promotions = promotions.select { |promotion| promotion.lane == lane }
           lane_benefits = eligible_benefits_for_promotable(lane_promotions.flat_map(&:benefits), order)
           perform_order_benefits(lane_benefits, lane) unless dry_run
diff --git a/promotions/app/models/solidus_promotions/promotion.rb b/promotions/app/models/solidus_promotions/promotion.rb
index 03a9c14560..3cc716fb6f 100644
--- a/promotions/app/models/solidus_promotions/promotion.rb
+++ b/promotions/app/models/solidus_promotions/promotion.rb
@@ -55,13 +55,13 @@ def self.human_enum_name(enum_name, enum_value)
     end
 
     def self.lane_options
-      ordered_lanes.map do |lane_name, _index|
-        [human_enum_name(:lane, lane_name), lane_name]
+      ordered_lanes.map do |lane|
+        [human_enum_name(:lane, lane), lane]
       end
     end
 
     def self.ordered_lanes
-      lanes.sort_by(&:last).to_h
+      lanes.keys.sort_by { |lane| lanes[lane] }
     end
 
     def self.order_activatable?(order)
diff --git a/promotions/spec/models/solidus_promotions/promotion_spec.rb b/promotions/spec/models/solidus_promotions/promotion_spec.rb
index 6d941eabf6..6787692785 100644
--- a/promotions/spec/models/solidus_promotions/promotion_spec.rb
+++ b/promotions/spec/models/solidus_promotions/promotion_spec.rb
@@ -112,7 +112,7 @@
   describe ".ordered_lanes" do
     subject { described_class.ordered_lanes }
 
-    it { is_expected.to eq({ "pre" => 0, "default" => 1, "post" => 2 }) }
+    it { is_expected.to eq(%w[pre default post]) }
   end
 
   describe "validations" do