Just wondering why I can't map the Lead description field to the contact description field.

It will let me map to the Account description and the Potential description field but not the contacts description field. 

I did notice that the Lead description field type is : Text Area ( Large )

The Contact description field type is: Text Area ( Small ) 

The Account description field type is: Text Area ( Large )

The Potential description field type is: Text Area ( Large )

The Description field is a default field in all the modules and there is no way to change the name or field type.

Is there a reason that the Contact Description field is a Text Area ( Small ) and not the Text Area ( Large )

So, I could map the fields?

Please advise, thanks.