Get rid of the last warning in the tests

[jesper-friis]

Description

Get rid of the last warning when running the tests.

Type of change

• Bug fix and code cleanup
• New feature
• Documentation update
• Testing

Checklist for the reviewer

This checklist should be used as a help for the reviewer.

• Is the change limited to one issue?
• Does this PR close the issue?
• Is the code easy to read and understand?
• Do all new feature have an accompanying new test?
• Has the documentation been updated as necessary?
• Is the code properly tested?

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 78.41%. Comparing base (590eb5d) to head (8894ae4).

Additional details and impacted files

@@           Coverage Diff           @@
##           master     #226   +/-   ##
=======================================
  Coverage   78.41%   78.41%           
=======================================
  Files          18       18           
  Lines        1696     1696           
=======================================
  Hits         1330     1330           
  Misses        366      366           

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