Index: Ringtoets/Common/src/Ringtoets.Common.Forms/Ringtoets.Common.Forms.csproj
===================================================================
diff -u -r743c32ba40bc0d0165d0513d6ca95282b1021e6a -r6833a6c92024007966c7fd99a955b234653f2ef8
--- Ringtoets/Common/src/Ringtoets.Common.Forms/Ringtoets.Common.Forms.csproj	(.../Ringtoets.Common.Forms.csproj)	(revision 743c32ba40bc0d0165d0513d6ca95282b1021e6a)
+++ Ringtoets/Common/src/Ringtoets.Common.Forms/Ringtoets.Common.Forms.csproj	(.../Ringtoets.Common.Forms.csproj)	(revision 6833a6c92024007966c7fd99a955b234653f2ef8)
@@ -61,7 +61,6 @@
       <DesignTime>True</DesignTime>
       <DependentUpon>Resources.resx</DependentUpon>
     </Compile>
-    <Compile Include="TreeNodeInfos\DefaultFailureMechanismTreeNodeInfo.cs" />
     <Compile Include="TreeNodeInfos\CalculationTreeNodeInfoFactory.cs" />
     <Compile Include="Views\CommentView.cs">
       <SubType>UserControl</SubType>
Fisheye: Tag 6833a6c92024007966c7fd99a955b234653f2ef8 refers to a dead (removed) revision in file `Ringtoets/Common/src/Ringtoets.Common.Forms/TreeNodeInfos/DefaultFailureMechanismTreeNodeInfo.cs'.
Fisheye: No comparison available.  Pass `N' to diff?
Index: Ringtoets/Common/test/Ringtoets.Common.Forms.Test/Ringtoets.Common.Forms.Test.csproj
===================================================================
diff -u -r7d242b8efca25dd01d33ba0481d707f7ee4baebd -r6833a6c92024007966c7fd99a955b234653f2ef8
--- Ringtoets/Common/test/Ringtoets.Common.Forms.Test/Ringtoets.Common.Forms.Test.csproj	(.../Ringtoets.Common.Forms.Test.csproj)	(revision 7d242b8efca25dd01d33ba0481d707f7ee4baebd)
+++ Ringtoets/Common/test/Ringtoets.Common.Forms.Test/Ringtoets.Common.Forms.Test.csproj	(.../Ringtoets.Common.Forms.Test.csproj)	(revision 6833a6c92024007966c7fd99a955b234653f2ef8)
@@ -67,7 +67,6 @@
     <Compile Include="PresentationObjects\ReferenceLineContextTest.cs" />
     <Compile Include="Properties\AssemblyInfo.cs" />
     <Compile Include="TreeNodeInfos\CalculationTreeNodeInfoFactoryTest.cs" />
-    <Compile Include="TreeNodeInfos\DefaultFailureMechanismTreeNodeInfoTest.cs" />
     <Compile Include="Views\CommentViewTest.cs" />
     <Compile Include="Views\FailureMechanismResultViewTest.cs" />
   </ItemGroup>
Fisheye: Tag 6833a6c92024007966c7fd99a955b234653f2ef8 refers to a dead (removed) revision in file `Ringtoets/Common/test/Ringtoets.Common.Forms.Test/TreeNodeInfos/DefaultFailureMechanismTreeNodeInfoTest.cs'.
Fisheye: No comparison available.  Pass `N' to diff?
Index: Ringtoets/GrassCoverErosionInwards/test/Ringtoets.GrassCoverErosionInwards.Forms.Test/TreeNodeInfos/GrassCoverErosionInwardsFailureMechanismContextTreeNodeInfoTest.cs
===================================================================
diff -u -r7206def3cee84d518d3f7ea1b76e05e3163b8aea -r6833a6c92024007966c7fd99a955b234653f2ef8
--- Ringtoets/GrassCoverErosionInwards/test/Ringtoets.GrassCoverErosionInwards.Forms.Test/TreeNodeInfos/GrassCoverErosionInwardsFailureMechanismContextTreeNodeInfoTest.cs	(.../GrassCoverErosionInwardsFailureMechanismContextTreeNodeInfoTest.cs)	(revision 7206def3cee84d518d3f7ea1b76e05e3163b8aea)
+++ Ringtoets/GrassCoverErosionInwards/test/Ringtoets.GrassCoverErosionInwards.Forms.Test/TreeNodeInfos/GrassCoverErosionInwardsFailureMechanismContextTreeNodeInfoTest.cs	(.../GrassCoverErosionInwardsFailureMechanismContextTreeNodeInfoTest.cs)	(revision 6833a6c92024007966c7fd99a955b234653f2ef8)
@@ -49,7 +49,8 @@
         private GrassCoverErosionInwardsGuiPlugin plugin;
         private TreeNodeInfo info;
 
-        private const int contextMenuRelevancyIndex = 1;
+        private const int contextMenuRelevancyIndexWhenRelevant = 1;
+        private const int contextMenuRelevancyIndexWhenNotRelevant = 0;
 
         [SetUp]
         public void SetUp()
@@ -268,7 +269,7 @@
                 var menu = info.ContextMenuStrip(failureMechanismContext, assessmentSection, treeView);
 
                 // Assert
-                TestHelper.AssertContextMenuStripContainsItem(menu, contextMenuRelevancyIndex,
+                TestHelper.AssertContextMenuStripContainsItem(menu, contextMenuRelevancyIndexWhenRelevant,
                                                               RingtoetsCommonFormsResources.FailureMechanismContextMenuStrip_Is_relevant,
                                                               RingtoetsCommonFormsResources.FailureMechanismContextMenuStrip_Is_relevant_Tooltip,
                                                               RingtoetsCommonFormsResources.Checkbox_ticked);
@@ -310,11 +311,47 @@
             var contextMenu = info.ContextMenuStrip(failureMechanismContext, null, treeViewControl);
 
             // Call
-            contextMenu.Items[contextMenuRelevancyIndex].PerformClick();
+            contextMenu.Items[contextMenuRelevancyIndexWhenRelevant].PerformClick();
 
             // Assert
             Assert.IsFalse(failureMechanism.IsRelevant);
             mocksRepository.VerifyAll();
         }
+
+        [Test]
+        public void ContextMenuStrip_FailureMechanismIsNotRelevantAndClickOnIsRelevantItem_MakeFailureMechanismRelevant()
+        {
+            // Setup
+            var failureMechanismObserver = mocksRepository.Stub<IObserver>();
+            failureMechanismObserver.Expect(o => o.UpdateObserver());
+
+            var failureMechanism = new GrassCoverErosionInwardsFailureMechanism
+            {
+                IsRelevant = false
+            };
+            failureMechanism.Attach(failureMechanismObserver);
+
+            var assessmentSection = mocksRepository.Stub<IAssessmentSection>();
+            var failureMechanismContext = new GrassCoverErosionInwardsFailureMechanismContext(failureMechanism, assessmentSection);
+
+            var treeViewControl = mocksRepository.StrictMock<TreeViewControl>();
+            var menuBuilder = new CustomItemsOnlyContextMenuBuilder();
+
+            var gui = mocksRepository.StrictMock<IGui>();
+            gui.Expect(g => g.Get(failureMechanismContext, treeViewControl)).Return(menuBuilder);
+
+            mocksRepository.ReplayAll();
+
+            plugin.Gui = gui;
+
+            var contextMenu = info.ContextMenuStrip(failureMechanismContext, null, treeViewControl);
+
+            // Call
+            contextMenu.Items[contextMenuRelevancyIndexWhenNotRelevant].PerformClick();
+
+            // Assert
+            Assert.IsTrue(failureMechanism.IsRelevant);
+            mocksRepository.VerifyAll();
+        }
     }
 }
\ No newline at end of file
Index: Ringtoets/Integration/test/Ringtoets.Integration.Forms.Test/TreeNodeInfos/FailureMechanismPlaceholderTreeNodeInfoTest.cs
===================================================================
diff -u -r330586b375b0f21f7aa9f650827ffe29572a2f03 -r6833a6c92024007966c7fd99a955b234653f2ef8
--- Ringtoets/Integration/test/Ringtoets.Integration.Forms.Test/TreeNodeInfos/FailureMechanismPlaceholderTreeNodeInfoTest.cs	(.../FailureMechanismPlaceholderTreeNodeInfoTest.cs)	(revision 330586b375b0f21f7aa9f650827ffe29572a2f03)
+++ Ringtoets/Integration/test/Ringtoets.Integration.Forms.Test/TreeNodeInfos/FailureMechanismPlaceholderTreeNodeInfoTest.cs	(.../FailureMechanismPlaceholderTreeNodeInfoTest.cs)	(revision 6833a6c92024007966c7fd99a955b234653f2ef8)
@@ -413,6 +413,49 @@
             mocks.VerifyAll();
         }
 
+        [Test]
+        public void ContextMenuStrip_FailureMechanismIsNotRelevantAndClickOnIsRelevantItem_MakeFailureMechanismRelevant()
+        {
+            // Setup
+            var failureMechanismObserver = mocks.Stub<IObserver>();
+            failureMechanismObserver.Expect(o => o.UpdateObserver());
+
+            var failureMechanism = new FailureMechanismPlaceholder("A")
+            {
+                IsRelevant = false
+            };
+            failureMechanism.Attach(failureMechanismObserver);
+
+            var assessmentSection = mocks.Stub<IAssessmentSection>();
+            var failureMechanismContext = new FailureMechanismPlaceholderContext(failureMechanism, assessmentSection);
+
+            var treeViewControl = mocks.StrictMock<TreeViewControl>();
+            var menuBuilder = new CustomItemsOnlyContextMenuBuilder();
+
+            var gui = mocks.StrictMock<IGui>();
+            gui.Stub(g => g.ProjectOpened += null).IgnoreArguments();
+            gui.Stub(g => g.ProjectOpened -= null).IgnoreArguments();
+            gui.Expect(g => g.Get(failureMechanismContext, treeViewControl)).Return(menuBuilder);
+
+            mocks.ReplayAll();
+
+            using (var guiPlugin = new RingtoetsGuiPlugin())
+            {
+                guiPlugin.Gui = gui;
+
+                var info = GetInfo(guiPlugin);
+
+                var contextMenu = info.ContextMenuStrip(failureMechanismContext, null, treeViewControl);
+
+                // Call
+                contextMenu.Items[contextMenuRelevancyIndex].PerformClick();
+
+                // Assert
+                Assert.IsTrue(failureMechanism.IsRelevant);
+            }
+            mocks.VerifyAll();
+        }
+
         private TreeNodeInfo GetInfo(RingtoetsGuiPlugin guiPlugin)
         {
             return guiPlugin.GetTreeNodeInfos().First(tni => tni.TagType == typeof(FailureMechanismPlaceholderContext));
Index: Ringtoets/Piping/test/Ringtoets.Piping.Forms.Test/TreeNodeInfos/PipingFailureMechanismContextTreeNodeInfoTest.cs
===================================================================
diff -u -r7206def3cee84d518d3f7ea1b76e05e3163b8aea -r6833a6c92024007966c7fd99a955b234653f2ef8
--- Ringtoets/Piping/test/Ringtoets.Piping.Forms.Test/TreeNodeInfos/PipingFailureMechanismContextTreeNodeInfoTest.cs	(.../PipingFailureMechanismContextTreeNodeInfoTest.cs)	(revision 7206def3cee84d518d3f7ea1b76e05e3163b8aea)
+++ Ringtoets/Piping/test/Ringtoets.Piping.Forms.Test/TreeNodeInfos/PipingFailureMechanismContextTreeNodeInfoTest.cs	(.../PipingFailureMechanismContextTreeNodeInfoTest.cs)	(revision 6833a6c92024007966c7fd99a955b234653f2ef8)
@@ -57,7 +57,8 @@
         private PipingGuiPlugin plugin;
         private TreeNodeInfo info;
 
-        private const int contextMenuRelevancyIndex = 1;
+        private const int contextMenuRelevancyIndexWhenRelevant = 1;
+        private const int contextMenuRelevancyIndexWhenNotRelevant = 0;
         private const int contextMenuValidateAllIndex = 3;
         private const int contextMenuCalculateAllIndex = 4;
         private const int contextMenuClearIndex = 5;
@@ -645,11 +646,47 @@
             var contextMenu = info.ContextMenuStrip(failureMechanismContext, null, treeViewControl);
 
             // Call
-            contextMenu.Items[contextMenuRelevancyIndex].PerformClick();
+            contextMenu.Items[contextMenuRelevancyIndexWhenRelevant].PerformClick();
 
             // Assert
             Assert.IsFalse(failureMechanism.IsRelevant);
             mocks.VerifyAll();
         }
+
+        [Test]
+        public void ContextMenuStrip_FailureMechanismIsNotRelevantAndClickOnIsRelevantItem_MakeFailureMechanismRelevant()
+        {
+            // Setup
+            var failureMechanismObserver = mocks.Stub<IObserver>();
+            failureMechanismObserver.Expect(o => o.UpdateObserver());
+
+            var failureMechanism = new PipingFailureMechanism
+            {
+                IsRelevant = false
+            };
+            failureMechanism.Attach(failureMechanismObserver);
+
+            var assessmentSection = mocks.Stub<IAssessmentSection>();
+            var failureMechanismContext = new PipingFailureMechanismContext(failureMechanism, assessmentSection);
+
+            var treeViewControl = mocks.StrictMock<TreeViewControl>();
+            var menuBuilder = new CustomItemsOnlyContextMenuBuilder();
+
+            var gui = mocks.StrictMock<IGui>();
+            gui.Expect(g => g.Get(failureMechanismContext, treeViewControl)).Return(menuBuilder);
+
+            mocks.ReplayAll();
+
+            plugin.Gui = gui;
+
+            var contextMenu = info.ContextMenuStrip(failureMechanismContext, null, treeViewControl);
+
+            // Call
+            contextMenu.Items[contextMenuRelevancyIndexWhenNotRelevant].PerformClick();
+
+            // Assert
+            Assert.IsTrue(failureMechanism.IsRelevant);
+            mocks.VerifyAll();
+        }
     }
 }
\ No newline at end of file