Fix issue with latest TeX Live (used in Debian Stable / Ubuntu Rolling)

7 jobs for master in 17 minutes and 32 seconds (queued for 1 second)
Status Name Job ID Coverage
  Test
passed debianOldOldStable #71160

00:15:54

passed debianOldStable #71159

00:17:31

passed debianStable #71157

00:13:45

passed debianTesting #71158

00:13:52

passed thesisPDF #71154

00:00:56

passed ubuntuLatest #71155

00:12:45

passed ubuntuRolling #71156

00:11:27