diff --git a/spec/features/registration_periods_spec.rb b/spec/features/registration_periods_spec.rb
index 88035d76..341edbe9 100644
--- a/spec/features/registration_periods_spec.rb
+++ b/spec/features/registration_periods_spec.rb
@@ -17,7 +17,7 @@ feature RegistrationPeriod do
 
       click_button 'Save Registration Period'
       expect(flash).
-          to eq('A error prohibited the Registration Period from being saved: ' \
+          to eq('An error prohibited the Registration Period from being saved: ' \
           "Start date can't be blank. End date can't be blank.")
 
       page.