Index: src/Deltares.DSoilModel.Forms/DSoilModelContext.cs
===================================================================
diff -u -r664 -r681
--- src/Deltares.DSoilModel.Forms/DSoilModelContext.cs	(.../DSoilModelContext.cs)	(revision 664)
+++ src/Deltares.DSoilModel.Forms/DSoilModelContext.cs	(.../DSoilModelContext.cs)	(revision 681)
@@ -161,6 +161,19 @@
                 return false;
             }
 
+            var boring = source as Boring;
+            if (boring != null)
+            {
+                if (member == boring.GetMemberName(b => b.TopVoid) ||
+                    member == boring.GetMemberName(b => b.BottomVoid) ||
+                    member == boring.GetMemberName(b => b.MedianVoid) ||
+                    member == boring.GetMemberName(b => b.GammaSatVoid) ||
+                    member == boring.GetMemberName(b => b.GammaUnsatVoid))
+                {
+                    return false;
+                }
+            }
+            
             var layer = source as BoringLayer;
             if (layer != null)
             {
Index: src/Deltares.DSoilModel.Forms.Tests/DSoilModelContextTest.cs
===================================================================
diff -u -r674 -r681
--- src/Deltares.DSoilModel.Forms.Tests/DSoilModelContextTest.cs	(.../DSoilModelContextTest.cs)	(revision 674)
+++ src/Deltares.DSoilModel.Forms.Tests/DSoilModelContextTest.cs	(.../DSoilModelContextTest.cs)	(revision 681)
@@ -474,13 +474,25 @@
 
         [TestCase(typeof(CharacteristicPoint), "X", false)]
         [TestCase(typeof(CharacteristicPoint), "Z", false)]
-        public void IsEnabledTest(Type senderType, string memberName, bool? expectedVisible)
+        public void IsEnabledTest(Type senderType, string memberName, bool? expectedEnabled)
         {
             var sender = Activator.CreateInstance(senderType);
             var context = new DSoilModelContext();
-            Assert.AreEqual(expectedVisible, context.IsEnabled(sender, memberName));
+            Assert.AreEqual(expectedEnabled, context.IsEnabled(sender, memberName));
         }
 
+        [TestCase(typeof(Boring), "TopVoid", false)]
+        [TestCase(typeof(Boring), "BottomVoid", false)]
+        [TestCase(typeof(Boring), "MedianVoid", false)]
+        [TestCase(typeof(Boring), "GammaSatVoid", false)]
+        [TestCase(typeof(Boring), "GammaUnsatVoid", false)]
+        public void IsVisibleTest(Type senderType, string memberName, bool? expectedVisible)
+        {
+            var sender = Activator.CreateInstance(senderType);
+            var context = new DSoilModelContext();
+            Assert.AreEqual(expectedVisible, context.IsVisible(sender, memberName));
+        }
+
         [TestCase(typeof(ConePenetrationTestData))]
         [TestCase(typeof(Boring))]
         [Ignore]