Index: Demo/Ringtoets/test/Demo.Ringtoets.Test/GUIs/DemoProjectPluginTest.cs
===================================================================
diff -u -rfea3ed82dfb6dfcad535eef16efcbaa9c01564ed -rce9e1d476f00cfb42ce2a8ab6c762baf5abfd97b
--- Demo/Ringtoets/test/Demo.Ringtoets.Test/GUIs/DemoProjectPluginTest.cs	(.../DemoProjectPluginTest.cs)	(revision fea3ed82dfb6dfcad535eef16efcbaa9c01564ed)
+++ Demo/Ringtoets/test/Demo.Ringtoets.Test/GUIs/DemoProjectPluginTest.cs	(.../DemoProjectPluginTest.cs)	(revision ce9e1d476f00cfb42ce2a8ab6c762baf5abfd97b)
@@ -20,13 +20,15 @@
 // All rights reserved.
 
 using System.Linq;
+using Core.Common.Gui;
 using Core.Common.Gui.Forms;
 using Core.Common.Gui.Plugin;
 using Core.Components.Charting.Data;
 using Core.Components.Gis.Data;
 using Demo.Ringtoets.GUIs;
 using Demo.Ringtoets.Views;
 using NUnit.Framework;
+using Rhino.Mocks;
 
 namespace Demo.Ringtoets.Test.GUIs
 {
@@ -37,13 +39,22 @@
         [RequiresSTA]
         public void DefaultConstructor_DefaultValues()
         {
+            // Setup
+            var mocks = new MockRepository();
+            var gui = mocks.Stub<IGui>();
+            mocks.ReplayAll();
+
             // Call
-            using (var plugin = new DemoProjectPlugin())
+            using (var plugin = new DemoProjectPlugin
             {
+                Gui = gui
+            })
+            {
                 // Assert
                 Assert.IsInstanceOf<PluginBase>(plugin);
                 Assert.IsInstanceOf<IRibbonCommandHandler>(plugin.RibbonCommandHandler);
             }
+            mocks.VerifyAll();
         }
 
         [Test]