Fixed directly calling a potentially missing key in a dict

[monsdar]

Fixes #603

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 83.98%. Comparing base (be5e92b) to head (a84554b).
Report is 4 commits behind head on master.

Additional details and impacted files

@@           Coverage Diff           @@
##           master     #604   +/-   ##
=======================================
  Coverage   83.98%   83.98%           
=======================================
  Files          60       60           
  Lines        2254     2254           
=======================================
  Hits         1893     1893           
  Misses        361      361           

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[cwendt94]

Thanks for creating the PR!