Index: Ringtoets/ClosingStructures/src/Ringtoets.ClosingStructures.Data/ClosingStructure.cs
===================================================================
diff -u -rd641f7a03b05f5d7e48f9adeffabafdcb48e1c14 -r3487d71f6e4e259d539d2823507a4b58d7f0822b
--- Ringtoets/ClosingStructures/src/Ringtoets.ClosingStructures.Data/ClosingStructure.cs	(.../ClosingStructure.cs)	(revision d641f7a03b05f5d7e48f9adeffabafdcb48e1c14)
+++ Ringtoets/ClosingStructures/src/Ringtoets.ClosingStructures.Data/ClosingStructure.cs	(.../ClosingStructure.cs)	(revision 3487d71f6e4e259d539d2823507a4b58d7f0822b)
@@ -20,8 +20,6 @@
 // All rights reserved.
 
 using System;
-using System.Collections.ObjectModel;
-using System.Linq;
 using Ringtoets.Common.Data;
 using Ringtoets.Common.Data.Probabilistics;
 using BaseConstructionProperties = Ringtoets.Common.Data.StructureBase.ConstructionProperties;
Index: Ringtoets/ClosingStructures/src/Ringtoets.ClosingStructures.Data/ClosingStructuresInput.cs
===================================================================
diff -u -rd641f7a03b05f5d7e48f9adeffabafdcb48e1c14 -r3487d71f6e4e259d539d2823507a4b58d7f0822b
--- Ringtoets/ClosingStructures/src/Ringtoets.ClosingStructures.Data/ClosingStructuresInput.cs	(.../ClosingStructuresInput.cs)	(revision d641f7a03b05f5d7e48f9adeffabafdcb48e1c14)
+++ Ringtoets/ClosingStructures/src/Ringtoets.ClosingStructures.Data/ClosingStructuresInput.cs	(.../ClosingStructuresInput.cs)	(revision 3487d71f6e4e259d539d2823507a4b58d7f0822b)
@@ -300,7 +300,7 @@
         /// <summary>
         /// Gets or sets the failure probability/frequency of an open structure before flooding.
         /// </summary>
-        /// <exception cref="ArgumentOutOfRangeException">Thrown when the value is negative.</exception>
+        /// <exception cref="ArgumentOutOfRangeException">Thrown when the value is negative or <see cref="double.NaN"/>.</exception>
         public double ProbabilityOrFrequencyOpenStructureBeforeFlooding
         {
             get
Index: Ringtoets/ClosingStructures/src/Ringtoets.ClosingStructures.Data/Properties/Resources.Designer.cs
===================================================================
diff -u -rd641f7a03b05f5d7e48f9adeffabafdcb48e1c14 -r3487d71f6e4e259d539d2823507a4b58d7f0822b
--- Ringtoets/ClosingStructures/src/Ringtoets.ClosingStructures.Data/Properties/Resources.Designer.cs	(.../Resources.Designer.cs)	(revision d641f7a03b05f5d7e48f9adeffabafdcb48e1c14)
+++ Ringtoets/ClosingStructures/src/Ringtoets.ClosingStructures.Data/Properties/Resources.Designer.cs	(.../Resources.Designer.cs)	(revision 3487d71f6e4e259d539d2823507a4b58d7f0822b)
@@ -1,7 +1,28 @@
-//------------------------------------------------------------------------------
+// Copyright (C) Stichting Deltares 2016. All rights reserved.
+//
+// This file is part of Ringtoets.
+//
+// Ringtoets is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+// 
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with this program. If not, see <http://www.gnu.org/licenses/>.
+//
+// All names, logos, and references to "Deltares" are registered trademarks of
+// Stichting Deltares and remain full property of Stichting Deltares at all times.
+// All rights reserved.
+
+//------------------------------------------------------------------------------
 // <auto-generated>
 //     This code was generated by a tool.
-//     Runtime Version:4.0.30319.18444
+//     Runtime Version:4.0.30319.42000
 //
 //     Changes to this file may cause incorrect behavior and will be lost if
 //     the code is regenerated.
@@ -88,7 +109,7 @@
         }
         
         /// <summary>
-        ///   Looks up a localized string similar to De waarde moet groter of gelijk aan 0 zijn..
+        ///   Looks up a localized string similar to De waarde moet groter dan of gelijk aan 0 zijn..
         /// </summary>
         public static string ClosingStructuresInput_ProbabilityOrFrequencyOpenStructureBeforeFlooding_Value_must_be_greater_or_equal_to_zero {
             get {
Index: Ringtoets/ClosingStructures/src/Ringtoets.ClosingStructures.Data/Properties/Resources.resx
===================================================================
diff -u -rd641f7a03b05f5d7e48f9adeffabafdcb48e1c14 -r3487d71f6e4e259d539d2823507a4b58d7f0822b
--- Ringtoets/ClosingStructures/src/Ringtoets.ClosingStructures.Data/Properties/Resources.resx	(.../Resources.resx)	(revision d641f7a03b05f5d7e48f9adeffabafdcb48e1c14)
+++ Ringtoets/ClosingStructures/src/Ringtoets.ClosingStructures.Data/Properties/Resources.resx	(.../Resources.resx)	(revision 3487d71f6e4e259d539d2823507a4b58d7f0822b)
@@ -130,6 +130,6 @@
     <value>De waarde voor 'N2A' moet in het bereik [0, 40] liggen.</value>
   </data>
   <data name="ClosingStructuresInput_ProbabilityOrFrequencyOpenStructureBeforeFlooding_Value_must_be_greater_or_equal_to_zero" xml:space="preserve">
-    <value>De waarde moet groter of gelijk aan 0 zijn.</value>
+    <value>De waarde moet groter dan of gelijk aan 0 zijn.</value>
   </data>
 </root>
\ No newline at end of file
Index: Ringtoets/ClosingStructures/test/Ringtoets.ClosingStructures.Data.Test/ClosingStructuresInputTest.cs
===================================================================
diff -u -rd641f7a03b05f5d7e48f9adeffabafdcb48e1c14 -r3487d71f6e4e259d539d2823507a4b58d7f0822b
--- Ringtoets/ClosingStructures/test/Ringtoets.ClosingStructures.Data.Test/ClosingStructuresInputTest.cs	(.../ClosingStructuresInputTest.cs)	(revision d641f7a03b05f5d7e48f9adeffabafdcb48e1c14)
+++ Ringtoets/ClosingStructures/test/Ringtoets.ClosingStructures.Data.Test/ClosingStructuresInputTest.cs	(.../ClosingStructuresInputTest.cs)	(revision 3487d71f6e4e259d539d2823507a4b58d7f0822b)
@@ -382,7 +382,7 @@
         [TestCase(-1e-6)]
         [TestCase(-23456)]
         [TestCase(double.NaN)]
-        public void ProbabilityOpenStructureBeforeFlooding_InvalidValues_ThrowsArgumentOutOfRangeException(double probability)
+        public void ProbabilityOrFrequencyOpenStructureBeforeFlooding_InvalidValues_ThrowsArgumentOutOfRangeException(double probability)
         {
             // Setup
             var input = new ClosingStructuresInput();
@@ -391,14 +391,14 @@
             TestDelegate call = () => input.ProbabilityOrFrequencyOpenStructureBeforeFlooding = probability;
 
             // Assert
-            TestHelper.AssertThrowsArgumentExceptionAndTestMessage<ArgumentOutOfRangeException>(call, "De waarde moet groter of gelijk aan 0 zijn.");
+            TestHelper.AssertThrowsArgumentExceptionAndTestMessage<ArgumentOutOfRangeException>(call, "De waarde moet groter dan of gelijk aan 0 zijn.");
         }
 
         [Test]
         [TestCase(0)]
         [TestCase(0.5)]
         [TestCase(1.0)]
-        public void ProbabilityOpenStructureBeforeFlooding_ValidValues_ExpectedValues(double probability)
+        public void ProbabilityOrFrequencyOpenStructureBeforeFlooding_ValidValues_ExpectedValues(double probability)
         {
             // Setup
             var input = new ClosingStructuresInput();