diff --git a/T2dMath.UtilsTest/ParseLasTime.cs b/T2dMath.UtilsTest/ParseLasTime.cs
index 782e077..07e1e9c 100644
--- a/T2dMath.UtilsTest/ParseLasTime.cs
+++ b/T2dMath.UtilsTest/ParseLasTime.cs
@@ -147,7 +147,7 @@ private static void PostProcessing(
             Dictionary<string, double[]> curves
         ) {
             const double tolerance = 1e-12;
-            double dnull = double.Parse(null_value, CultureInfo.InvariantCulture);
+            double dnull = double.Parse(null_value.Replace(',', '.'), CultureInfo.InvariantCulture);
             string[] formats = { "dd-MMM-yyyy", "dd/MM/yyyy", "dd.MM.yyyy" }; //01-JAN-2000, 14/06/2012
             DateTime date = DateTime.ParseExact(date_value, formats, CultureInfo.InvariantCulture);