diff --git a/src/message.ts b/src/message.ts
index 05c7f86..1c81439 100644
--- a/src/message.ts
+++ b/src/message.ts
@@ -34,6 +34,10 @@ export default class Message {
 		return this.messageOrNote.renoteId;
 	}
 
+	public get visibility(): string {
+		return this.messageOrNote.visibility;
+	}
+
 	/**
 	 * メンション部分を除いたテキスト本文
 	 */
diff --git a/src/modules/reminder/index.ts b/src/modules/reminder/index.ts
index 434e943..bfebb31 100644
--- a/src/modules/reminder/index.ts
+++ b/src/modules/reminder/index.ts
@@ -59,9 +59,12 @@ export default class extends Module {
 		const separatorIndex = text.indexOf(' ') > -1 ? text.indexOf(' ') : text.indexOf('\n');
 		const thing = text.substr(separatorIndex + 1).trim();
 
-		if (thing === '' && msg.quoteId == null) {
+		if (thing === '' && msg.quoteId == null || msg.visibility === 'followers') {
 			msg.reply(serifs.reminder.invalid);
-			return true;
+			return {
+				reaction: '🆖',
+				immediate: true,
+			};
 		}
 
 		const remind = this.reminds.insertOne({