diff --git a/src/views/charts2/charts/entityDetail/EntityDetailMap.vue b/src/views/charts2/charts/entityDetail/EntityDetailMap.vue
index e817a421..c8ad57b6 100644
--- a/src/views/charts2/charts/entityDetail/EntityDetailMap.vue
+++ b/src/views/charts2/charts/entityDetail/EntityDetailMap.vue
@@ -38,7 +38,7 @@
                     <div class="scroll-list" :style="`transform: translateY(${trackingSubscriber.startOffset}px)`">
                       <div class="scroll__item"
                            v-for="(record, index) in trackingSubscriber.trackRecords.slice(trackingSubscriber.scrollStartIndex, trackingSubscriber.scrollEndIndex)"
-                           :key="item.time"
+                           :key="record.time"
                            @mouseenter="timelineMouseEnter(trackingSubscriber, record)"
                            @mouseleave="timelineMouseLeave(trackingSubscriber, record)"
                       >