diff --git a/RhSolutions.AddIn/Services/ExcelWriterBase.cs b/RhSolutions.AddIn/Services/ExcelWriterBase.cs
index 3ec5348..e6fa80e 100644
--- a/RhSolutions.AddIn/Services/ExcelWriterBase.cs
+++ b/RhSolutions.AddIn/Services/ExcelWriterBase.cs
@@ -70,6 +70,7 @@ namespace RhSolutions.Services
                         .Insert(XlInsertShiftDirection.xlShiftToRight, XlInsertFormatOrigin.xlFormatFromRightOrBelow);
 
                     Range newColumnHeader = _worksheet.Cells[_amountCell.Row, _amountCell.Column - 1];
+                    newColumnHeader.NumberFormat = "@";
                     newColumnHeader.Value2 = $"{product.Item1}";
                     newColumnHeader.WrapText = true;