Open specific Worksheet Excel on 97-2003 Worksheet

I want to open a specific worksheet开发者_运维百科 every time and not the one which was saved last. I have the following macro in a Microsoft Office Excel 97-2003 Worksheet (This Workbook --> Workbook, Open):

Private Sub Workbook_Open()
Sheets("Charts_Month").Activate End Sub

But apparently this doesn't work. How can I fix this?

Private Sub Workbook_Open()
Sheets("Charts_Month").Activate
End Sub