diff --git a/packages/frontend/src/scripts/use-note-capture.ts b/packages/frontend/src/scripts/use-note-capture.ts
index 389ee1256..ffe33cccc 100644
--- a/packages/frontend/src/scripts/use-note-capture.ts
+++ b/packages/frontend/src/scripts/use-note-capture.ts
@@ -20,11 +20,8 @@ export function useNoteCapture(props: {
 			case 'reacted': {
 				const reaction = body.reaction;
 
-				if (body.emoji) {
-					const emojis = note.value.emojis || [];
-					if (!emojis.includes(body.emoji)) {
-						note.value.emojis = [...emojis, body.emoji];
-					}
+				if (body.emoji && !(body.emoji.name in note.value.reactionEmojis)) {
+					note.value.reactionEmojis[body.emoji.name] = body.emoji.url;
 				}
 
 				// TODO: reactionsプロパティがない場合ってあったっけ？ なければ || {} は消せる