diff --git a/src/client/app/common/views/components/autocomplete.vue b/src/client/app/common/views/components/autocomplete.vue
index f1f85ba40..d61c598ec 100644
--- a/src/client/app/common/views/components/autocomplete.vue
+++ b/src/client/app/common/views/components/autocomplete.vue
@@ -187,7 +187,8 @@ export default Vue.extend({
 				} else {
 					this.$root.api('users/search', {
 						query: this.q,
-						limit: 10
+						limit: 10,
+						detail: false
 					}).then(users => {
 						this.users = users;
 						this.fetching = false;
diff --git a/src/client/app/common/views/components/messaging.vue b/src/client/app/common/views/components/messaging.vue
index 1b22571cd..7016695e2 100644
--- a/src/client/app/common/views/components/messaging.vue
+++ b/src/client/app/common/views/components/messaging.vue
@@ -116,7 +116,8 @@ export default Vue.extend({
 			this.$root.api('users/search', {
 				query: this.q,
 				localOnly: true,
-				limit: 10
+				limit: 10,
+				detail: false
 			}).then(users => {
 				this.result = users.filter(user => user.id != this.$store.state.i.id);
 			});
diff --git a/src/server/api/endpoints/users/search.ts b/src/server/api/endpoints/users/search.ts
index 85138fa6e..f7f179496 100644
--- a/src/server/api/endpoints/users/search.ts
+++ b/src/server/api/endpoints/users/search.ts
@@ -41,6 +41,14 @@ export const meta = {
 				'ja-JP': 'ローカルユーザーのみ検索対象にするか否か'
 			}
 		},
+
+		detail: {
+			validator: $.bool.optional,
+			default: true,
+			desc: {
+				'ja-JP': '詳細なユーザー情報を含めるか否か'
+			}
+		},
 	},
 };
 
@@ -72,6 +80,5 @@ export default define(meta, (ps, me) => new Promise(async (res, rej) => {
 		}
 	}
 
-	// Serialize
-	res(await Promise.all(users.map(user => pack(user, me, { detail: true }))));
+	res(await Promise.all(users.map(user => pack(user, me, { detail: ps.detail }))));
 }));