diff --git a/manifests/vncproxy/common.pp b/manifests/vncproxy/common.pp
index 6aa33f74b..842a9cb66 100644
--- a/manifests/vncproxy/common.pp
+++ b/manifests/vncproxy/common.pp
@@ -103,5 +103,9 @@ class nova::vncproxy::common (
     nova_config {
       'vnc/novncproxy_base_url': value => $vncproxy_base_url;
     }
+  } else {
+    nova_config {
+      'vnc/novncproxy_base_url': value => $facts['os_service_default'];
+    }
   }
 }
diff --git a/spec/classes/nova_compute_spec.rb b/spec/classes/nova_compute_spec.rb
index 52142e1cf..93c1d0b8f 100644
--- a/spec/classes/nova_compute_spec.rb
+++ b/spec/classes/nova_compute_spec.rb
@@ -26,8 +26,8 @@ describe 'nova::compute' do
 
       it 'does not configure vncproxy base url in nova.conf' do
         is_expected.to contain_nova_config('vnc/enabled').with_value(true)
-        is_expected.to_not contain_nova_config('vnc/novncproxy_base_url')
         is_expected.to contain_nova_config('vnc/server_proxyclient_address').with_value('<SERVICE DEFAULT>')
+        is_expected.to contain_nova_config('vnc/novncproxy_base_url').with_value('<SERVICE DEFAULT>')
       end
 
       it 'should have spice disabled' do