Scrutinizer Auto-Fixes

This patch was automatically generated as part of the following inspection:
https://scrutinizer-ci.com/g/matteosister/functional-filter/inspections/1160f8bb-d70f-4019-9838-aa20da4d4a14
Merge pull request #1 from matteosister/scrutinizer-patch-1

Scrutinizer Auto-Fixes