Thread:Project:Support desk/How to add fileicons to the file page?

Hi, i added some nice fileicons to my wiki but they are not shown on the File:-page, except the one for pdf-files. On File:-page the name of the file is shown as text instead (like Thatsafile.docx, calculatingtable.xlsx ,etc. . Filelist and Category-List works fine with all icons. Can that be activated somhow?