How do to configure Karma to NOT restart the browser when it is closed?

I'm using the following command to run my unit tests in sort of a "debug" mode

karma start ./.config/karma.conf.js --browsers=Chrome --debug

The command works fine -- it runs the tests and keeps it's instance of the Chrome browser open indefinitely. However, when I'm attempting to kill the browser by closing it, the test runner restarts it (up to 2 times).

05 01 2018 13:00:56.024:ERROR [launcher]: Chrome crashed.

05 01 2018 13:00:56.024:ERROR [launcher]: Chrome stdout:
05 01 2018 13:00:56.024:ERROR [launcher]: Chrome stderr:
05 01 2018 13:00:56.256:INFO [launcher]: Trying to start Chrome again (1/2).

Is there a way to instruct Karma to NOT restart Chrome when it's closed/crashed?