diff --git a/RhSolutions.Tests/CanDoGuess.cs b/RhSolutions.Tests/CanDoGuess.cs
index 8e2d71c..ff13106 100644
--- a/RhSolutions.Tests/CanDoGuess.cs
+++ b/RhSolutions.Tests/CanDoGuess.cs
@@ -8,13 +8,15 @@ namespace RhSolutions.Tests;
 public class CanDoGuess : IDisposable
 {
     private RhSolutionsAddIn _addIn;
+    private IReader _guessReader;
     private IReader _reader;
 
     public CanDoGuess()
     {
         _addIn = new();
         _addIn.AutoOpen();
-        _reader = new GuessReader(Util.Application);
+        _guessReader = new GuessReader(Util.Application);
+        _reader = new ExcelReader(Util.Application, RhSolutionsAddIn.Configuration);
     }
 
     [ExcelFact(Workbook = @"..\..\..\TestWorkbooks\TestSpecificationGuess.xlsx")]
@@ -22,7 +24,7 @@ public class CanDoGuess : IDisposable
     {
         Worksheet sourceSheet = Util.Workbook.Worksheets[1];
         RhSolutionsAddIn.Configuration.SetPriceListPath(Path.GetFullPath(@"..\..\..\TestWorkbooks\TargetSpecificationGuess.xlsx"));
-        var products = _reader.ReadProducts(new[] { sourceSheet });
+        var products = _guessReader.ReadProducts(new[] { sourceSheet });
         var _writer = new ExcelWriter(Util.Application, RhSolutionsAddIn.Configuration);
         _writer.WriteProducts(products);
         Worksheet targetSheet = Util.Application.ActiveWindow.ActiveSheet;
@@ -39,7 +41,7 @@ public class CanDoGuess : IDisposable
     {
         Worksheet sourceSheet = Util.Workbook.Worksheets[1];
         RhSolutionsAddIn.Configuration.SetPriceListPath(Path.GetFullPath(@"..\..\..\TestWorkbooks\TargetSpecificationGuessOneRow.xlsx"));
-        var products = _reader.ReadProducts(new[] { sourceSheet });
+        var products = _guessReader.ReadProducts(new[] { sourceSheet });
         var _writer = new ExcelWriter(Util.Application, RhSolutionsAddIn.Configuration);
         _writer.WriteProducts(products);
         Worksheet targetSheet = Util.Application.ActiveWindow.ActiveSheet;
diff --git a/RhSolutions.Tests/TestWorkbooks/TestSpecificationGuess.xlsx b/RhSolutions.Tests/TestWorkbooks/TestSpecificationGuess.xlsx
index fbd545c..6376b5f 100644
Binary files a/RhSolutions.Tests/TestWorkbooks/TestSpecificationGuess.xlsx and b/RhSolutions.Tests/TestWorkbooks/TestSpecificationGuess.xlsx differ