Index: src/Deltares.DSoilModel.Data/DSoilModelProject.cs
===================================================================
diff -u -r946 -r966
--- src/Deltares.DSoilModel.Data/DSoilModelProject.cs	(.../DSoilModelProject.cs)	(revision 946)
+++ src/Deltares.DSoilModel.Data/DSoilModelProject.cs	(.../DSoilModelProject.cs)	(revision 966)
@@ -517,8 +517,8 @@
         /// </exception>
         private void CheckVersionInfo(string filename)
         {
-            const int highestSupportedSoilVersion = 1000;
-            const int highestSupportedGeometryVersion = 1001;
+            const int highestSupportedSoilVersion = 1001;
+            const int highestSupportedGeometryVersion = 1000;
 
             string[] fileLines = File.ReadAllLines(filename);
             List<string> fileContent = fileLines.ToList();
@@ -530,14 +530,14 @@
             }
             if (dSerieFileInfo.HasGeometryData)
             {
-                if (dSerieFileInfo.GeometryVersionNumber > highestSupportedSoilVersion)
+                if (dSerieFileInfo.GeometryVersionNumber > highestSupportedGeometryVersion)
                 {
                     throw new DSoilModelProjectException(String.Format(LocalizationManager.GetTranslatedText(this, "ErrorNoValidGeometryData"), filename));
                 }
             }
             if (dSerieFileInfo.HasSoilData)
             {
-                if (dSerieFileInfo.SoilVersionNumber > highestSupportedGeometryVersion)
+                if (dSerieFileInfo.SoilVersionNumber > highestSupportedSoilVersion)
                 {
                     throw new DSoilModelProjectException(String.Format(LocalizationManager.GetTranslatedText(this, "ErrorNoValidSoilData"), filename));
                 }