because the word Appell is used exactly that way in german language as well. I guess its a heritage from Napoleon and french occupation back than. There are some area's in the "Rheinland" that still uses geman pronounced french wordings.
actually, it IS the German word as the french is spelled with only one L at the end. In Dutch it means apple, unless you put an accent-grave on the e, then it's roll call or appeal.
an apfel a day keeps the doctor away