diff --git a/spec/requests/api/v1/admin/domain_allows_spec.rb b/spec/requests/api/v1/admin/domain_allows_spec.rb
index 662a8f9a8..b8f0b0055 100644
--- a/spec/requests/api/v1/admin/domain_allows_spec.rb
+++ b/spec/requests/api/v1/admin/domain_allows_spec.rb
@@ -113,7 +113,7 @@ RSpec.describe 'Domain Allows' do
     end
 
     context 'with invalid domain name' do
-      let(:params) { 'foo bar' }
+      let(:params) { { domain: 'foo bar' } }
 
       it 'returns http unprocessable entity' do
         subject