Index: Ringtoets/Integration/src/Ringtoets.Integration.IO/Importers/HydraulicBoundaryDatabaseImporter.cs
===================================================================
diff -u -r80a01a82824ea399497b134beea899ac175122b5 -raf0e6f596d42879533b372801ab6620959e9708f
--- Ringtoets/Integration/src/Ringtoets.Integration.IO/Importers/HydraulicBoundaryDatabaseImporter.cs	(.../HydraulicBoundaryDatabaseImporter.cs)	(revision 80a01a82824ea399497b134beea899ac175122b5)
+++ Ringtoets/Integration/src/Ringtoets.Integration.IO/Importers/HydraulicBoundaryDatabaseImporter.cs	(.../HydraulicBoundaryDatabaseImporter.cs)	(revision af0e6f596d42879533b372801ab6620959e9708f)
@@ -23,6 +23,7 @@
 using Core.Common.Base.IO;
 using Ringtoets.Common.Data.AssessmentSection;
 using Ringtoets.Common.Data.Hydraulics;
+using Ringtoets.Integration.IO.Handlers;
 
 namespace Ringtoets.Integration.IO.Importers
 {
@@ -31,15 +32,27 @@
     /// </summary>
     public class HydraulicBoundaryDatabaseImporter : FileImporterBase<HydraulicBoundaryDatabase>
     {
+        private readonly IHydraulicBoundaryDatabaseUpdateHandler updateHandler;
+
         /// <summary>
         /// Creates a new instance of <see cref="HydraulicBoundaryDatabase"/>.
         /// </summary>
         /// <param name="importTarget">The import target.</param>
+        /// <param name="updateHandler">The object responsible for updating the <see cref="HydraulicBoundaryDatabase"/>.</param>
         /// <param name="filePath">The path of the hydraulic boundary database file to import from.</param>
         /// <exception cref="ArgumentNullException">Thrown when any parameter is <c>null</c>.</exception>
-        public HydraulicBoundaryDatabaseImporter(HydraulicBoundaryDatabase importTarget, string filePath)
-            : base(filePath, importTarget) {}
+        public HydraulicBoundaryDatabaseImporter(HydraulicBoundaryDatabase importTarget, IHydraulicBoundaryDatabaseUpdateHandler updateHandler,
+                                                 string filePath)
+            : base(filePath, importTarget)
+        {
+            if (updateHandler == null)
+            {
+                throw new ArgumentNullException(nameof(updateHandler));
+            }
 
+            this.updateHandler = updateHandler;
+        }
+
         protected override void LogImportCanceledMessage()
         {
             throw new System.NotImplementedException();
Index: Ringtoets/Integration/test/Ringtoets.Integration.IO.Test/Importers/HydraulicBoundaryDatabaseImporterTest.cs
===================================================================
diff -u -r80a01a82824ea399497b134beea899ac175122b5 -raf0e6f596d42879533b372801ab6620959e9708f
--- Ringtoets/Integration/test/Ringtoets.Integration.IO.Test/Importers/HydraulicBoundaryDatabaseImporterTest.cs	(.../HydraulicBoundaryDatabaseImporterTest.cs)	(revision 80a01a82824ea399497b134beea899ac175122b5)
+++ Ringtoets/Integration/test/Ringtoets.Integration.IO.Test/Importers/HydraulicBoundaryDatabaseImporterTest.cs	(.../HydraulicBoundaryDatabaseImporterTest.cs)	(revision af0e6f596d42879533b372801ab6620959e9708f)
@@ -19,9 +19,12 @@
 // Stichting Deltares and remain full property of Stichting Deltares at all times.
 // All rights reserved.
 
+using System;
 using Core.Common.Base.IO;
 using NUnit.Framework;
+using Rhino.Mocks;
 using Ringtoets.Common.Data.Hydraulics;
+using Ringtoets.Integration.IO.Handlers;
 using Ringtoets.Integration.IO.Importers;
 
 namespace Ringtoets.Integration.IO.Test.Importers
@@ -30,16 +33,29 @@
     public class HydraulicBoundaryDatabaseImporterTest
     {
         [Test]
+        public void Constructor_UpdateHandlerNull_ThrowsArgumentNullException()
+        {
+            // Call
+            TestDelegate call = () => new HydraulicBoundaryDatabaseImporter(new HydraulicBoundaryDatabase(), null, "");
+
+            // Assert
+            var exception = Assert.Throws<ArgumentNullException>(call);
+            Assert.AreEqual("updateHandler", exception.ParamName);
+        }
+        [Test]
         public void Constructor_ExpectedValues()
         {
             // Setup
-            var filePath = "";
+            var mocks = new MockRepository();
+            var updateHandler = mocks.Stub<IHydraulicBoundaryDatabaseUpdateHandler>();
+            mocks.ReplayAll();
 
             // Call
-            var importer = new HydraulicBoundaryDatabaseImporter(new HydraulicBoundaryDatabase(), filePath);
+            var importer = new HydraulicBoundaryDatabaseImporter(new HydraulicBoundaryDatabase(), updateHandler, "");
 
             // Assert
             Assert.IsInstanceOf<FileImporterBase<HydraulicBoundaryDatabase>>(importer);
+            mocks.VerifyAll();
         }
     }
 }
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