diff --git a/spec/acceptance/ironic_wsgi_apache_spec.rb b/spec/acceptance/ironic_wsgi_apache_spec.rb
index c675f772..5181c356 100644
--- a/spec/acceptance/ironic_wsgi_apache_spec.rb
+++ b/spec/acceptance/ironic_wsgi_apache_spec.rb
@@ -80,6 +80,9 @@ describe 'basic ironic' do
             db_connection   => 'mysql+pymysql://ironic-inspector:a_big_secret@127.0.0.1/ironic-inspector?charset=utf8',
           }
         }
+        default: {
+          fail("Unsupported osfamily (${::osfamily})")
+        }
       }
       EOS