diff --git a/testing/tests/regression-suite/0559-iOS-REPORT.test b/testing/tests/regression-suite/0559-iOS-REPORT.test
index 61113f11..307af1bd 100644
--- a/testing/tests/regression-suite/0559-iOS-REPORT.test
+++ b/testing/tests/regression-suite/0559-iOS-REPORT.test
@@ -40,4 +40,5 @@ SELECT caldav_data.dav_name, dtstart, rrule
               OR dtend > '20110922T000000Z'
            )
        )
+   ORDER BY dav_id
 ENDQUERY