diff --git a/config/locales/en.yml b/config/locales/en.yml
index 1699ebc2..f8dc9ecf 100644
--- a/config/locales/en.yml
+++ b/config/locales/en.yml
@@ -237,8 +237,8 @@ en:
   gender: Gender
   hide_past_appointments: Hide past appointments
   home: Home
-  yes: Yes
-  no: No
+  "yes": "Yes"
+  "no": "No"
   help:
     patients:
       status: Patients without the required profile information are marked as "incomplete".
diff --git a/test/unit/locales_test.rb b/test/unit/locales_test.rb
new file mode 100644
index 00000000..8b967e0e
--- /dev/null
+++ b/test/unit/locales_test.rb
@@ -0,0 +1,12 @@
+# frozen_string_literal: true
+
+require 'test_helper'
+
+class LocalesTest < ActiveSupport::TestCase
+  test 'yes and no are translated in every locale' do
+    %i[en es pt].each do |locale|
+      assert I18n.exists?(:yes, locale), "missing :yes in #{locale}"
+      assert I18n.exists?(:no, locale), "missing :no in #{locale}"
+    end
+  end
+end