diff --git a/packages/backend/src/misc/gen-avatar.ts b/packages/backend/src/misc/gen-identicon.ts
similarity index 90%
rename from packages/backend/src/misc/gen-avatar.ts
rename to packages/backend/src/misc/gen-identicon.ts
index 8838ec8d15..5cedd7afaf 100644
--- a/packages/backend/src/misc/gen-avatar.ts
+++ b/packages/backend/src/misc/gen-identicon.ts
@@ -1,5 +1,6 @@
 /**
- * Random avatar generator
+ * Identicon generator
+ * https://en.wikipedia.org/wiki/Identicon
  */
 
 import * as p from 'pureimage';
@@ -34,9 +35,9 @@ const cellSize = actualSize / n;
 const sideN = Math.floor(n / 2);
 
 /**
- * Generate buffer of random avatar by seed
+ * Generate buffer of an identicon by seed
  */
-export function genAvatar(seed: string, stream: WriteStream): Promise<void> {
+export function genIdenticon(seed: string, stream: WriteStream): Promise<void> {
 	const rand = gen.create(seed);
 	const canvas = p.make(size, size);
 	const ctx = canvas.getContext('2d');
diff --git a/packages/backend/src/models/repositories/user.ts b/packages/backend/src/models/repositories/user.ts
index 3dc7c67ec2..85141cdc41 100644
--- a/packages/backend/src/models/repositories/user.ts
+++ b/packages/backend/src/models/repositories/user.ts
@@ -159,7 +159,7 @@ export class UserRepository extends Repository<User> {
 		if (user.avatarUrl) {
 			return user.avatarUrl;
 		} else {
-			return `${config.url}/random-avatar/${user.id}`;
+			return `${config.url}/identicon/${user.id}`;
 		}
 	}
 
diff --git a/packages/backend/src/server/index.ts b/packages/backend/src/server/index.ts
index 85fe21accb..764306c7d8 100644
--- a/packages/backend/src/server/index.ts
+++ b/packages/backend/src/server/index.ts
@@ -23,7 +23,7 @@ import Logger from '@/services/logger';
 import { envOption } from '../env';
 import { UserProfiles, Users } from '@/models/index';
 import { networkChart } from '@/services/chart/index';
-import { genAvatar } from '@/misc/gen-avatar';
+import { genIdenticon } from '@/misc/gen-identicon';
 import { createTemp } from '@/misc/create-temp';
 import { publishMainStream } from '@/services/stream';
 import * as Acct from 'misskey-js/built/acct';
@@ -84,9 +84,9 @@ router.get('/avatar/@:acct', async ctx => {
 	}
 });
 
-router.get('/random-avatar/:x', async ctx => {
+router.get('/identicon/:x', async ctx => {
 	const [temp] = await createTemp();
-	await genAvatar(ctx.params.x, fs.createWriteStream(temp));
+	await genIdenticon(ctx.params.x, fs.createWriteStream(temp));
 	ctx.set('Content-Type', 'image/png');
 	ctx.body = fs.createReadStream(temp);
 });