Fixes #27202

Change-Id: I83620748a81500e433795c7b2b7f13399d17f777
GitHub-Last-Rev: 64457e12ceaa408efc7f75091f1b30c35b8e5d44
GitHub-Pull-Request: golang/go#27472
Reviewed-on: https://go-review.googlesource.com/133057Reviewed-by: Daniel Theophanes <kardianos@gmail.com>