diff --git a/frontend/src/components/SignalDashboard.vue b/frontend/src/components/SignalDashboard.vue
index 7dd8ee0..fefd5d4 100644
--- a/frontend/src/components/SignalDashboard.vue
+++ b/frontend/src/components/SignalDashboard.vue
@@ -134,7 +134,7 @@
                   'new-signal-flash': isNewSignal(signal.latestSignal)
                 }"
               >
-                <n-card-header>
+                <template #header>
                   <div style="display: flex; justify-content: space-between; align-items: center;">
                     <div style="display: flex; align-items: center; gap: 6px;">
                       <n-tag :type="getPriorityType(signal.latestSignal?.priority || 'medium')" size="small" round>
@@ -145,7 +145,7 @@
                     </div>
                     <n-text depth="3" style="font-size: 12px;">{{ formatDate(signal.created_at) }}</n-text>
                   </div>
-                </n-card-header>
+                </template>
                 <n-text class="signal-content" :depth="1">{{ signal.content }}</n-text>
               </n-list-item>
             </n-list>
@@ -577,7 +577,7 @@ import { ref, onMounted, onUnmounted, reactive, watch, computed } from 'vue'
 import { 
   NLayout, NLayoutSider, NLayoutContent, NSpace, NCard, NButton, NList, NListItem, NTag, NText, 
   NGrid, NGridItem, NScrollbar, NSpin, NModal, NForm, NFormItem, 
-  NInput, useMessage, NProgress, NIcon, NSteps, NStep, NStatistic, NCardHeader
+  NInput, useMessage, NProgress, NIcon, NSteps, NStep, NStatistic
 } from 'naive-ui'
 import axios from 'axios'
 import VChart from 'vue-echarts'