Index: Ringtoets/Common/test/Ringtoets.Common.IO.Test/SurfaceLines/CharacteristicPointsCsvReaderTest.cs
===================================================================
diff -u -rc83f15fb42be282b6eb9fb3ff316c53bd3367be3 -r6ef5e439a6d9f40ebd9926251945e0935fbbc314
--- Ringtoets/Common/test/Ringtoets.Common.IO.Test/SurfaceLines/CharacteristicPointsCsvReaderTest.cs	(.../CharacteristicPointsCsvReaderTest.cs)	(revision c83f15fb42be282b6eb9fb3ff316c53bd3367be3)
+++ Ringtoets/Common/test/Ringtoets.Common.IO.Test/SurfaceLines/CharacteristicPointsCsvReaderTest.cs	(.../CharacteristicPointsCsvReaderTest.cs)	(revision 6ef5e439a6d9f40ebd9926251945e0935fbbc314)
@@ -449,7 +449,7 @@
         public void ReadCharacteristicPointsLocation_FileHasCoordinateCausingOverOrUnderflow_ThrowsLineParseException(string malformattedVariableName)
         {
             // Setup
-            string path = Path.Combine(testDataPath, string.Format("1location_{0}.krp.csv", malformattedVariableName));
+            string path = Path.Combine(testDataPath, $"1location_{malformattedVariableName}.krp.csv");
 
             // Precondition
             Assert.IsTrue(File.Exists(path));