diff --git a/src/modules/reminder/index.ts b/src/modules/reminder/index.ts
index 29e2ead..a69c9b4 100644
--- a/src/modules/reminder/index.ts
+++ b/src/modules/reminder/index.ts
@@ -131,7 +131,7 @@ export default class extends Module {
 			msg.reply(done ? getSerif(serifs.reminder.done(msg.friend.name)) : serifs.reminder.cancel);
 			return;
 		} else if (isOneself === false) {
-			msg.reply("イタズラはめっですよ！");
+			msg.reply(serifs.reminder.doneFromInvalidUser);
 			return;
 		} else {
 			if (msg.isDm) this.unsubscribeReply(key);
diff --git a/src/serifs.ts b/src/serifs.ts
index d349cd9..1fe9ca0 100644
--- a/src/serifs.ts
+++ b/src/serifs.ts
@@ -339,6 +339,8 @@ export default {
 	reminder: {
 		invalid: 'うーん...？',
 
+		doneFromInvalidUser: 'イタズラはめっですよ！',
+
 		invalidVisibility: "公開範囲の指定を変えてみて",
 
 		reminds: 'やること一覧です！',