diff --git a/locales/ja-JP.yml b/locales/ja-JP.yml
index 6040be045..15cb30997 100644
--- a/locales/ja-JP.yml
+++ b/locales/ja-JP.yml
@@ -1390,7 +1390,6 @@ admin/views/instance.vue:
   smtp-user: "SMTPユーザー"
   smtp-pass: "SMTPパスワード"
   test-email: "テスト"
-  test-email-to: "テストメールの送信先アドレス"
   serviceworker-config: "ServiceWorker"
   enable-serviceworker: "ServiceWorkerを有効にする"
   serviceworker-info: "プッシュ通知を行うには有効する必要があります。"
diff --git a/src/client/app/admin/views/instance.vue b/src/client/app/admin/views/instance.vue
index 7d271bcb8..2d0fc9b40 100644
--- a/src/client/app/admin/views/instance.vue
+++ b/src/client/app/admin/views/instance.vue
@@ -426,16 +426,8 @@ export default Vue.extend({
 		},
 
 		async testEmail() {
-			const { canceled, result: to } = await this.$root.dialog({
-				title: this.$t('test-email-to'),
-				input: {
-					type: 'email',
-				},
-				showCancelButton: true
-			});
-			if (canceled) return;
 			this.$root.api('admin/send-email', {
-				to: to,
+				to: this.maintainerEmail,
 				subject: 'Test email',
 				text: 'Yo'
 			}).then(x => {