diff --git a/frontend/src/App.vue b/frontend/src/App.vue
index a862b9a..104dd5a 100644
--- a/frontend/src/App.vue
+++ b/frontend/src/App.vue
@@ -44,8 +44,6 @@ watchEffect(() => {
 onMounted(loadSession)
 onMounted(watchConnect)
 onUnmounted(watchDisconnect)
-// Update human-readable x seconds ago messages from mtimes
-setInterval(documentStore.updateModified, 1000)
 const headerMain = ref<typeof HeaderMain | null>(null)
 let vert = 0
 let timer: any = null
diff --git a/frontend/src/components/FileExplorer.vue b/frontend/src/components/FileExplorer.vue
index c63040d..1e2c70b 100644
--- a/frontend/src/components/FileExplorer.vue
+++ b/frontend/src/components/FileExplorer.vue
@@ -79,7 +79,7 @@
 </template>
 
 <script setup lang="ts">
-import { ref, computed, watchEffect } from 'vue'
+import { ref, computed, watchEffect, onMounted, onUnmounted } from 'vue'
 import { useDocumentStore } from '@/stores/documents'
 import type { Document } from '@/repositories/Document'
 import FileRenameInput from './FileRenameInput.vue'
@@ -229,6 +229,13 @@ watchEffect(() => {
     focusBreadcrumb()
   }
 })
+// Update human-readable x seconds ago messages from mtimes
+let modifiedTimer: any = null
+const updateModified = () => {
+  for (const doc of props.documents) doc.modified = formatUnixDate(doc.mtime)
+}
+onMounted(() => { modifiedTimer = setInterval(updateModified, 1000) })
+onUnmounted(() => { clearInterval(modifiedTimer) })
 const mkdir = (doc: Document, name: string) => {
   const control = connect(controlUrl, {
     open() {
diff --git a/frontend/src/stores/documents.ts b/frontend/src/stores/documents.ts
index a99cbfb..5fcb2d7 100644
--- a/frontend/src/stores/documents.ts
+++ b/frontend/src/stores/documents.ts
@@ -53,9 +53,6 @@ export const useDocumentStore = defineStore({
       }
       this.document = docs as Document[]
     },
-    updateModified() {
-      for (const doc of this.document) doc.modified = formatUnixDate(doc.mtime)
-    },
     login(username: string, privileged: boolean) {
       this.user.username = username
       this.user.privileged = privileged