diff --git a/test/lisp/calendar/solar-tests.el b/test/lisp/calendar/solar-tests.el
index 7a37f8db55..dff64635e5 100644
--- a/test/lisp/calendar/solar-tests.el
+++ b/test/lisp/calendar/solar-tests.el
@@ -26,7 +26,7 @@ solar-sunrise-sunset
         (calendar-longitude 75.8)
         (calendar-time-zone +330)
         (calendar-standard-time-zone-name "IST")
-        (calendar-daylight-time-zone-name "IST")
+        (calendar-daylight-savings-starts nil)
         (epsilon (/ 60.0)))             ; Minute accuracy is good enough.
     (let* ((sunrise-sunset (solar-sunrise-sunset '(12 30 2020)))
            (sunrise (car (nth 0 sunrise-sunset)))