Index: src/Deltares.DSoilModel.Forms.Tests/DSoilModelContextTest.cs
===================================================================
diff -u -r632 -r633
--- src/Deltares.DSoilModel.Forms.Tests/DSoilModelContextTest.cs	(.../DSoilModelContextTest.cs)	(revision 632)
+++ src/Deltares.DSoilModel.Forms.Tests/DSoilModelContextTest.cs	(.../DSoilModelContextTest.cs)	(revision 633)
@@ -472,5 +472,13 @@
             Assert.AreEqual(expectedEnabled, context.IsEnabled(grid, memberName));
         }
 
+        [TestCase(typeof(CharacteristicPoint), "X", false)]
+        [TestCase(typeof(CharacteristicPoint), "Z", false)]
+        public void IsEnabledTest(Type senderType, string memberName, bool expectedVisible)
+        {
+            var sender = Activator.CreateInstance(senderType);
+            var context = new DSoilModelContext();
+            Assert.AreEqual(expectedVisible, context.IsEnabled(sender, memberName));
+        }
     }
 }
Index: src/Deltares.DSoilModel.Forms/DSoilModelContext.cs
===================================================================
diff -u -r632 -r633
--- src/Deltares.DSoilModel.Forms/DSoilModelContext.cs	(.../DSoilModelContext.cs)	(revision 632)
+++ src/Deltares.DSoilModel.Forms/DSoilModelContext.cs	(.../DSoilModelContext.cs)	(revision 633)
@@ -365,6 +365,10 @@
                 return true; // all other parameters should be editable
             }
 
+            var cp = source as CharacteristicPoint;
+            if (member == cp.GetMemberName(p => p.X) || member == cp.GetMemberName(p => p.Z))
+                return false;
+
             var grid = source as GridViewControl;
             if (grid != null)
             {