diff --git a/spec/config/routes_spec.rb b/spec/config/routes_spec.rb
index 8d5cb91ef..e5f0505f4 100644
--- a/spec/config/routes_spec.rb
+++ b/spec/config/routes_spec.rb
@@ -1,18 +1,23 @@
 require "rails_helper"
 
 RSpec.describe "routes.rb" do
-  it "does not use underscores" do
-    paths = Rails.application.routes.routes.map { |r| r.path.spec.to_s if r.defaults[:controller] }.compact
-
-    # Allow underscores for ActiveAdmin, Rails and Turbo routes
-    paths = paths.reject { |p| p.starts_with?("/admin") }
-    paths = paths.reject { |p| p.starts_with?("/rails") }
-    paths = paths.reject { |p| p.include?("_historical_location") }
-
-    paths.each do |path|
-      has_underscores = path.split("/").any? { |component| !component.start_with?(":") && component.match("_") }
+  let(:all_routes) do
+    Rails.application.routes.routes.map { |r| r.path.spec.to_s if r.defaults[:controller] }.compact
+  end
+  let(:active_admin_routes_prefix) { "/admin" }
+  let(:rails_routes_prefix) { "/rails" }
+  let(:turbo_routes_pattern) { "_historical_location" }
+  let(:project_routes) do
+    all_routes.reject do |r|
+      r.starts_with?(active_admin_routes_prefix) || r.starts_with?(rails_routes_prefix) ||
+        r.include?(turbo_routes_pattern)
+    end
+  end
 
-      expect(has_underscores).to be(false), "#{path} should not have underscores"
+  it "does not use underscores" do
+    routes_with_underscores = project_routes.select do |r|
+      r.split("/").any? { |component| !component.start_with?(":") && component.match("_") }
     end
+    expect(routes_with_underscores).to be_empty
   end
 end