diff --git a/doc/ci/testing/unit_test_reports.md b/doc/ci/testing/unit_test_reports.md
index b37dd54e96ba0de5e45b20c91ec2a5e4d1cf5412..2954b75916647f26fcf77d734cf6c33f3c8d7db9 100644
--- a/doc/ci/testing/unit_test_reports.md
+++ b/doc/ci/testing/unit_test_reports.md
@@ -92,7 +92,11 @@ To copy the name of a single failed test:
 > - [Introduced](https://gitlab.com/gitlab-org/gitlab/-/issues/235525) in Test Reports in GitLab 13.9.
 
 If a test failed in the project's default branch in the last 14 days, a message like
-`Failed {n} time(s) in {default_branch} in the last 14 days` is displayed for that test.
+`Failed {n} time(s) in {default_branch} in the last 14 days` is displayed for that test. 
+
+The calculation includes failed tests in completed pipelines, but not [blocked pipelines](../jobs/job_control.md#types-of-manual-jobs).
+[Issue 431265](https://gitlab.com/gitlab-org/gitlab/-/issues/431265) proposes to
+also include blocked pipelines in the calculation.
 
 ## How to set it up