diff --git a/src/main.py b/src/main.py
index b14f270..e2916e5 100644
--- a/src/main.py
+++ b/src/main.py
@@ -75,7 +75,10 @@ def copy_excel_file(source_path, destination_path, passwords):
         # Create new sheet in destination workbook
         from openpyxl.chartsheet import Chartsheet
         if isinstance(source_sheet, Chartsheet):
-            chartsheet_warning = f"Chartsheet detected in '{os.path.basename(source_path)}' on sheet '{sheet_name}'."
+            original_filename = os.path.basename(source_path)
+            if '_processed' in original_filename:  # If it's a temp file, get original name
+                original_filename = original_filename.split('_processed')[0]
+            chartsheet_warning = f"Chartsheet detected in '{original_filename}' on sheet '{sheet_name}'."
             # For chartsheets, we need to create a worksheet instead
             dest_sheet = dest_wb.create_sheet(title=sheet_name)