diff --git a/spec/bind.rb b/spec/bind.rb
index 21c069c..b632118 100644
--- a/spec/bind.rb
+++ b/spec/bind.rb
@@ -32,6 +32,11 @@ describe file('/etc/bind/named.conf.local') do
   it { should contain '4.2.2.4' }
 end
 
+describe port(53) do
+  it { should be_listening.with('tcp') }
+  it { should be_listening.with('udp') }
+end
+
 describe command('host hello.test.local 127.0.0.1') do
   its(:exit_status) { should eq 0 }
   its(:stdout) { should contain('1.2.3.4') }