diff --git a/packages/backend/src/misc/reaction-lib.ts b/packages/backend/src/misc/reaction-lib.ts
index 1748bcee1..129549505 100644
--- a/packages/backend/src/misc/reaction-lib.ts
+++ b/packages/backend/src/misc/reaction-lib.ts
@@ -90,7 +90,3 @@ export function decodeReaction(str: string): DecodedReaction {
 		host: undefined,
 	};
 }
-
-export function convertToDecoded(reaction: string): string {
-	return decodeReaction(reaction).reaction;
-}
diff --git a/packages/backend/src/models/repositories/note-reaction.ts b/packages/backend/src/models/repositories/note-reaction.ts
index ea04f0331..4075c7d43 100644
--- a/packages/backend/src/models/repositories/note-reaction.ts
+++ b/packages/backend/src/models/repositories/note-reaction.ts
@@ -2,7 +2,7 @@ import { db } from "@/db/postgre.js";
 import { NoteReaction } from "@/models/entities/note-reaction.js";
 import { Notes, Users } from "../index.js";
 import type { Packed } from "@/misc/schema.js";
-import { convertToDecoded } from "@/misc/reaction-lib.js";
+import { decodeReaction } from "@/misc/reaction-lib.js";
 import type { User } from "@/models/entities/user.js";
 
 export const NoteReactionRepository = db.getRepository(NoteReaction).extend({
@@ -27,7 +27,7 @@ export const NoteReactionRepository = db.getRepository(NoteReaction).extend({
 			id: reaction.id,
 			createdAt: reaction.createdAt.toISOString(),
 			user: await Users.pack(reaction.user ?? reaction.userId, me),
-			type: convertToDecoded(reaction.reaction),
+			type: decodeReaction(reaction.reaction).reaction,
 			...(opts.withNote
 				? {
 						// may throw error
diff --git a/packages/backend/src/models/repositories/note.ts b/packages/backend/src/models/repositories/note.ts
index 8d8df6254..f4229eaa8 100644
--- a/packages/backend/src/models/repositories/note.ts
+++ b/packages/backend/src/models/repositories/note.ts
@@ -15,7 +15,6 @@ import type { Packed } from "@/misc/schema.js";
 import { nyaize } from "@/misc/nyaize.js";
 import { awaitAll } from "@/prelude/await-all.js";
 import {
-	convertToDecoded,
 	convertReactions,
 	decodeReaction,
 } from "@/misc/reaction-lib.js";
@@ -77,7 +76,7 @@ async function populateMyReaction(
 	if (_hint_?.myReactions) {
 		const reaction = _hint_.myReactions.get(note.id);
 		if (reaction) {
-			return convertToDecoded(reaction.reaction);
+			return decodeReaction(reaction.reaction).reaction;
 		} else if (reaction === null) {
 			return undefined;
 		}
@@ -90,7 +89,7 @@ async function populateMyReaction(
 	});
 
 	if (reaction) {
-		return convertToDecoded(reaction.reaction);
+		return decodeReaction(reaction.reaction).reaction;
 	}
 
 	return undefined;