# CIRCLE\_COMPARE\_URL empty on workflow rerun

**URL:** <https://discuss.circleci.com/t/circle-compare-url-empty-on-workflow-rerun/24927>\
**Category:** Bug Reports\
**Created:** [September 6, 2018, 9:17am UTC](https://discuss.circleci.com/t/circle-compare-url-empty-on-workflow-rerun/24927 "2018-09-06T09:17:12Z")\
**Posts on this page:** 1\
**Showing post:** 6

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**Author:** ![alexfdz](https://sea2.discourse-cdn.com/circleci/user_avatar/discuss.circleci.com/alexfdz/32/21183_2.png) [@alexfdz](https://discuss.circleci.com/u/alexfdz)\
**Post date:** [February 1, 2019, 12:49pm UTC](https://discuss.circleci.com/t/circle-compare-url-empty-on-workflow-rerun/24927/6 "2019-02-01T12:49:01Z")

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@mpadourek Does it work at all for workflows (not single builds)?

Another thread is suggesting (I have the same issue) that _CIRCLE\_COMPARE\_URL_ is always empty in a workflow execution.

[CIRCLE\_COMPARE\_URL is empty when running a workflow job](https://discuss.circleci.com/t/circle-compare-url-is-empty-when-running-a-workflow-job/25299)

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