diff --git a/packages/backend/src/server/api/common/generate-fts-query.ts b/packages/backend/src/server/api/common/generate-fts-query.ts
index ad31b734a..073fccd3d 100644
--- a/packages/backend/src/server/api/common/generate-fts-query.ts
+++ b/packages/backend/src/server/api/common/generate-fts-query.ts
@@ -134,8 +134,12 @@ function afterFilter(query: SelectQueryBuilder<any>, filter: string) {
 }
 
 function instanceFilter(query: SelectQueryBuilder<any>, filter: string, id: number) {
-    query.andWhere(`note.userHost = :instance_${id}`);
-    query.setParameter(`instance_${id}`, filter);
+    if (filter === 'local') {
+        query.andWhere(`note.userHost IS NULL`);
+    } else {
+        query.andWhere(`note.userHost = :instance_${id}`);
+        query.setParameter(`instance_${id}`, filter);
+    }
 }
 
 function instanceFilterInverse(query: SelectQueryBuilder<any>, filter: string, id: number) {
diff --git a/packages/client/src/pages/search-filters.vue b/packages/client/src/pages/search-filters.vue
index 346548c18..8191a6e6b 100644
--- a/packages/client/src/pages/search-filters.vue
+++ b/packages/client/src/pages/search-filters.vue
@@ -28,10 +28,10 @@
 				<div class="section _block">
 					<div class="title">{{ i18n.ts._filters._dialog.userDomain }}</div>
 					<div class="content">
-						<p><code>[-]from:[@]user[@host.tld]</code></p>
-						<p><code>[-]mention:[@]user[@host.tld]</code></p>
-						<p><code>[-]reply:[@]user[@host.tld]</code></p>
-						<p><code>[-]instance:domain.tld</code></p>
+						<p><code>[-]from:[@]user[@domain.tld]</code></p>
+						<p><code>[-]mention:[@]user[@domain.tld]</code></p>
+						<p><code>[-]reply:[@]user[@domain.tld]</code></p>
+						<p><code>[-]instance:local|domain.tld</code></p>
 					</div>
 				</div>
 				<div class="section _block">