Thanks for pointing this out guys. JK
I'm using the ISC license (https://en.wikipedia.org/wiki/ISC_license) which is equivalent to the 2-clause BSD, but does so with fewer and simpler words.
Also, the MIT license (https://en.wikipedia.org/wiki/MIT_license) is quite popular. It is also equivalent to the 2-clause BSD, but not quite as short as the more modern ISC license.