File Format equals Marco-Enabled Workbook

Within my VBA code, I want to save the Excel file as "Excel Macro-Enabled Workbook." Currently, File Format:=xlNormal within the VBA code and the results saves the Excel file as .xls. How do I write the File Format to save the Excel file as "Excel Macro-Enabled Workbook."

Below is an example:
ActiveWorkbook.SaveAs Filename:=Left$(ActiveWorkbook.Name, (Len(ActiveWorkbook.Name) - 4)), FileFormat:=xlNormal, CreateBackup:=False