House ethics rules say an aide can’t run to succeed his or her boss and stay on the congressional payroll, but a staffer for Rep. Roscoe Bartlett (R-Md.) did so for the past four months.

The aide in question, Alex Mooney, moved to fix what Bartlett’s office called a “clerical error” Thursday after being contacted about the matter by The Washington Post.

Read the full story at WashingtonPost.com.