diff --git a/packages/frontend/src/composables/use-mkselect.ts b/packages/frontend/src/composables/use-mkselect.ts
index b93c42a94c..801b864dab 100644
--- a/packages/frontend/src/composables/use-mkselect.ts
+++ b/packages/frontend/src/composables/use-mkselect.ts
@@ -1,3 +1,8 @@
+/*
+ * SPDX-FileCopyrightText: syuilo and misskey-project
+ * SPDX-License-Identifier: AGPL-3.0-only
+ */
+
 import { ref } from 'vue';
 import type { Ref, MaybeRefOrGetter } from 'vue';
 import type { MkSelectItem, OptionValue, GetMkSelectValueTypesFromDef } from '@/components/MkSelect.vue';