diff --git a/src/app/item-detail/monitoring-stats/monitoring-stats.component.ts b/src/app/item-detail/monitoring-stats/monitoring-stats.component.ts
index 0c7485d..8f42522 100644
--- a/src/app/item-detail/monitoring-stats/monitoring-stats.component.ts
+++ b/src/app/item-detail/monitoring-stats/monitoring-stats.component.ts
@@ -48,6 +48,8 @@ export class MonitoringStatsComponent implements OnInit {
           series: comparisonSeries,
         };
         this.updateComparisonChartFlag = true;
+      } else {
+        this.monitoringComparisonChartOptions = null
       }
     });
   }