CheckStyle plug-in - remove "Line is longer than 80 characters (found 99)."

I can't for the life of me see where you can edit the checkstyle.xml to remove / alter rules, in particular:

Line is longer than 80 characters (found 99). 

TIA

IntelliJ IDEA 2017.2 EAP
Build #IU-172.2953.9, built on June 13, 2017
IntelliJ IDEA EAP User
Expiration date: July 13, 2017
JRE: 1.8.0_152-release-915-b3 x86_64
JVM: OpenJDK 64-Bit Server VM by JetBrains s.r.o
Mac OS X 10.12.5