Fix copy-pasta error
Fix copy-pasta error

Summary: Mypy would have caught this error :(

Test Plan: Didn't 500 anymore in Changes VM

Reviewers: kylec

Reviewed By: kylec

Subscribers: changesbot

Differential Revision: https://tails.corp.dropbox.com/D183007

dropbox/changes,dropbox/changes,dropbox/changes,dropbox/changes