diff --git a/static/src/app/statistic/war-detail/war-detail.component.ts b/static/src/app/statistic/war-detail/war-detail.component.ts
index 2b09dfa..749496d 100644
--- a/static/src/app/statistic/war-detail/war-detail.component.ts
+++ b/static/src/app/statistic/war-detail/war-detail.component.ts
@@ -353,7 +353,7 @@ export class WarDetailComponent {
     [this.tmpPointData, this.tmpBudgetData, this.tmpTransportData, this.tmpReviveData, this.tmpStabilizeData,
       this.tmpKillData, this.tmpFrienlyFireData, this.tmpFlagCaptureData].forEach(tmp => {
       for (let j in [0, 1]) {
-        if (new Date(tmp[j].series[tmp[j].series.length - 1].name) < endDate) {
+        if (tmp[j].series[tmp[j].series.length - 1].name < endDate) {
           tmp[j].series.push({
               'name': endDate,
               'value': tmp[j].series[tmp[j].series.length - 1].value