diff --git a/ci/Jenkinsfile.e2e b/ci/Jenkinsfile.e2e
index f009c3eddd..498c1286ba 100644
--- a/ci/Jenkinsfile.e2e
+++ b/ci/Jenkinsfile.e2e
@@ -139,6 +139,7 @@ pipeline {
             testSuite: "${WORKSPACE}/test/ui-test/testSuites/*",
           ])
           print("Squish run result: ${result}")
+          /* Ignore UNSTABLE caused by retried tests. */
           if (!['SUCCESS', 'UNSTABLE'].contains(result)) {
             throw new Exception('Squish run failed!')
           }