diff --git a/RhSolutions.AddIn/Services/ExcelReader.cs b/RhSolutions.AddIn/Services/ExcelReader.cs
index dc99253..56e0695 100644
--- a/RhSolutions.AddIn/Services/ExcelReader.cs
+++ b/RhSolutions.AddIn/Services/ExcelReader.cs
@@ -110,7 +110,7 @@ public class ExcelReader : IReader, IDisposable
                     object name = worksheet.Cells[row, NameCell.Column].Value2;
                     object sku = worksheet.Cells[row, SkuCell.Column].Value2;
                     object measure = worksheet.Cells[row, MeasureCell.Column].Value2;
-                    var productMeasure = measure.ToString() switch
+                    var productMeasure = measure?.ToString() switch
                     {
                         "м" => Measure.M,
                         "шт" => Measure.P,