Material number printing in ALV

Hi.

One field in my ALV is mara-matnr , now , when the ALV displays then there are no leading zeros, and there are no leading zeros in the Printout as well. However , in the printout , after the material number there is a '#' . So what displays like

10001234 , prints out as 10001234# . I do not want this pound to appear in the Printout. How to achieve this.