diff --git a/src/client/app/common/scripts/should-mute-note.ts b/src/client/app/common/scripts/should-mute-note.ts
index 4eab76421..8a6430b1d 100644
--- a/src/client/app/common/scripts/should-mute-note.ts
+++ b/src/client/app/common/scripts/should-mute-note.ts
@@ -2,8 +2,17 @@ export default function(me, settings, note) {
 	const isMyNote = note.userId == me.id;
 	const isPureRenote = note.renoteId != null && note.text == null && note.fileIds.length == 0 && note.poll == null;
 
-	return settings.showMyRenotes === false && isMyNote && isPureRenote ||
-		settings.showRenotedMyNotes === false && isPureRenote && note.renote.userId == me.id ||
-		settings.showLocalRenotes === false && isPureRenote && note.renote.user.host == null ||
-		!isMyNote && note.text && settings.mutedWords.some(q => q.length > 0 && !q.some(word => !note.text.includes(word)));
+	const includesMutedWords = (text: string) =>
+		text
+			? settings.mutedWords.some(q => q.length > 0 && !q.some(word => !text.includes(word)))
+			: false;
+
+	return (
+		(!isMyNote && note.reply && includesMutedWords(note.reply.text)) ||
+		(!isMyNote && note.renote && includesMutedWords(note.renote.text)) ||
+		(settings.showMyRenotes === false && isMyNote && isPureRenote) ||
+		(settings.showRenotedMyNotes === false && isPureRenote && note.renote.userId == me.id) ||
+		(settings.showLocalRenotes === false && isPureRenote && note.renote.user.host == null) ||
+		(!isMyNote && includesMutedWords(note.text))
+	);
 }