diff --git a/packages/backend/src/server/api/endpoints/admin/emoji/update.ts b/packages/backend/src/server/api/endpoints/admin/emoji/update.ts
index f9ca7baef8..04226d8953 100644
--- a/packages/backend/src/server/api/endpoints/admin/emoji/update.ts
+++ b/packages/backend/src/server/api/endpoints/admin/emoji/update.ts
@@ -74,11 +74,11 @@ export default class extends Endpoint<typeof meta, typeof paramDef> { // eslint-
 				driveFile = await this.driveFilesRepository.findOneBy({ id: ps.fileId });
 				if (driveFile == null) throw new ApiError(meta.errors.noSuchFile);
 			}
-			const oldemoji = await this.customEmojiService.getEmojiById(ps.id);
-			if (oldemoji !== null) {
-				if (ps.name !== oldemoji.name) {
-					const duplicateCheck = await this.customEmojiService.isDuplicateCheck(ps.name);
-					if (duplicateCheck) throw new ApiError(meta.errors.sameNameEmojiExists);
+			const emoji = await this.customEmojiService.getEmojiById(ps.id);
+			if (emoji != null) {
+				if (ps.name !== emoji.name) {
+					const isDuplicate = await this.customEmojiService.checkDuplicate(ps.name);
+					if (isDuplicate) throw new ApiError(meta.errors.sameNameEmojiExists);
 				}
 			} else {
 				throw new ApiError(meta.errors.noSuchEmoji);