diff --git a/src/client/theme-default/components/VPLocalSearchBox.vue b/src/client/theme-default/components/VPLocalSearchBox.vue
index 07b1bd15..24dac640 100644
--- a/src/client/theme-default/components/VPLocalSearchBox.vue
+++ b/src/client/theme-default/components/VPLocalSearchBox.vue
@@ -148,6 +148,11 @@ const cache = new LRUCache<string, Map<string, string>>(16) // 16 files
 debouncedWatch(
   () => [searchIndex.value, filterText.value, showDetailedList.value] as const,
   async ([index, filterTextValue, showDetailedListValue], old, onCleanup) => {
+
+    if (old?.[0] !== index) { // in case of hmr
+      cache.clear()
+    }
+
     let canceled = false
     onCleanup(() => {
       canceled = true
diff --git a/src/client/theme-default/support/lru.ts b/src/client/theme-default/support/lru.ts
index bad3f2b4..b6673512 100644
--- a/src/client/theme-default/support/lru.ts
+++ b/src/client/theme-default/support/lru.ts
@@ -30,4 +30,8 @@ export class LRUCache<K, V> {
   first(): K | undefined {
     return this.cache.keys().next().value
   }
+
+  clear(): void {
+    this.cache.clear()
+  }
 }