Index: Ringtoets/Piping/test/Ringtoets.Piping.IO.Test/Exporters/PipingConfigurationWriterTest.cs
===================================================================
diff -u -rf43c22c9f5dc04d352988510303fcfe12d712be8 -r6928d01beb183acca2937ed5835e951e999be5cb
--- Ringtoets/Piping/test/Ringtoets.Piping.IO.Test/Exporters/PipingConfigurationWriterTest.cs	(.../PipingConfigurationWriterTest.cs)	(revision f43c22c9f5dc04d352988510303fcfe12d712be8)
+++ Ringtoets/Piping/test/Ringtoets.Piping.IO.Test/Exporters/PipingConfigurationWriterTest.cs	(.../PipingConfigurationWriterTest.cs)	(revision 6928d01beb183acca2937ed5835e951e999be5cb)
@@ -152,16 +152,18 @@
         public void Write_FileInUse_ThrowCriticalFileWriteException()
         {
             // Setup
-            string filePath = TestHelper.GetScratchPadPath(Path.GetRandomFileName());
-            using (new FileDisposeHelper(filePath))
-            using (new FileStream(filePath, FileMode.Open))
+            string path = TestHelper.GetScratchPadPath(Path.GetRandomFileName());
+
+            using (var fileDisposeHelper = new FileDisposeHelper(path))
             {
+                fileDisposeHelper.LockFiles();
+
                 // Call
-                TestDelegate call = () => PipingConfigurationWriter.Write(new CalculationGroup(), filePath);
+                TestDelegate call = () => PipingConfigurationWriter.Write(new CalculationGroup(), path);
 
                 // Assert
                 var exception = Assert.Throws<CriticalFileWriteException>(call);
-                Assert.AreEqual($"Er is een onverwachte fout opgetreden tijdens het schrijven van het bestand '{filePath}'.", exception.Message);
+                Assert.AreEqual($"Er is een onverwachte fout opgetreden tijdens het schrijven van het bestand '{path}'.", exception.Message);
                 Assert.IsInstanceOf<IOException>(exception.InnerException);
             }
         }