diff --git a/src/pages/oj/store/modules/contest.js b/src/pages/oj/store/modules/contest.js
index cdf3a1d1e..14f3e3430 100644
--- a/src/pages/oj/store/modules/contest.js
+++ b/src/pages/oj/store/modules/contest.js
@@ -83,7 +83,7 @@ const getters = {
       if (duration.weeks() > 0) {
         return 'Start At ' + duration.humanize()
       }
-      let texts = [duration.hours(), duration.minutes(), duration.seconds()]
+      let texts = [Math.floor(duration.asHours()), duration.minutes(), duration.seconds()]
       return '-' + texts.join(':')
     } else if (getters.contestStatus === CONTEST_STATUS.UNDERWAY) {
       let duration = moment.duration(getters.contestEndTime.diff(state.now, 'seconds'), 'seconds')