Merge branch 'fix-autopkgtest-fails' into 'master'

Fix unittests failure.

See merge request !22
8 jobs for master in 9 minutes and 40 seconds (queued for 1 second)
latest
Status Job ID Name Coverage
  Build
passed #256320
build

00:04:13

 
  Test
passed #256325
autopkgtest

00:03:42

passed #256326
blhc

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passed #256324
lintian

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passed #256327
piuparts

00:05:21

passed #256323
reprotest

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passed #256322
test-build-all

00:03:47

passed #256321
test-build-any

00:02:12