Many thanks for the fix.
That's somehow an odd default value in my opinion.
Just in case you haven't seen it: We are participating in the Github/Digital Ocean Hacktoberfest.
If you register here https://hacktoberfest.digitalocean.com/ and create three more pull requests in October (on any Github Repository, even though we always appreciate help 😄 ) you'll get a T-Shirt.
The failed test (http://builds-artifacts.piwik.org/piwik/piwik/3.x-dev/24801/) don't seem to have anything to do with your change.