diff --git a/src/api/common/add-file-to-drive.ts b/src/api/common/add-file-to-drive.ts
index 5f7d255e4b..1c8965e31d 100644
--- a/src/api/common/add-file-to-drive.ts
+++ b/src/api/common/add-file-to-drive.ts
@@ -214,7 +214,7 @@ export default (
 
 			const readable = fs.createReadStream(path);
 
-			return addToGridFS(name, readable, mime, {
+			return addToGridFS(detectedName, readable, mime, {
 				user_id: user._id,
 				folder_id: folder !== null ? folder._id : null,
 				comment: comment,
@@ -224,25 +224,26 @@ export default (
 		.then(file => {
 			log(`drive file has been created ${file._id}`);
 			resolve(file);
-			return serialize(file);
-		})
-		.then(serializedFile => {
-			// Publish drive_file_created event
-			event(user._id, 'drive_file_created', fileObj);
 
-			// Register to search database
-			if (config.elasticsearch.enable) {
-				const es = require('../../db/elasticsearch');
-				es.index({
-					index: 'misskey',
-					type: 'drive_file',
-					id: file._id.toString(),
-					body: {
-						name: file.name,
-						user_id: user._id.toString()
+			serialize(file)
+				.then(serializedFile => {
+					// Publish drive_file_created event
+					event(user._id, 'drive_file_created', serializedFile);
+
+					// Register to search database
+					if (config.elasticsearch.enable) {
+						const es = require('../../db/elasticsearch');
+						es.index({
+							index: 'misskey',
+							type: 'drive_file',
+							id: file._id.toString(),
+							body: {
+								name: file.name,
+								user_id: user._id.toString()
+							}
+						});
 					}
 				});
-			}
 		})
 		.catch(reject);
 });
diff --git a/src/api/endpoints/drive/files/upload_from_url.ts b/src/api/endpoints/drive/files/upload_from_url.ts
index 60332b4afe..519e0bdf65 100644
--- a/src/api/endpoints/drive/files/upload_from_url.ts
+++ b/src/api/endpoints/drive/files/upload_from_url.ts
@@ -10,7 +10,6 @@ import * as debug from 'debug';
 import * as tmp from 'tmp';
 import * as fs from 'fs';
 import * as request from 'request';
-import * as crypto from 'crypto';
 
 const log = debug('misskey:endpoint:upload_from_url');
 
@@ -21,11 +20,11 @@ const log = debug('misskey:endpoint:upload_from_url');
  * @param {any} user
  * @return {Promise<any>}
  */
-module.exports = (params, user) => new Promise((res, rej) => {
+module.exports = async (params, user): Promise<any> => {
 	// Get 'url' parameter
 	// TODO: Validate this url
 	const [url, urlErr] = $(params.url).string().$;
-	if (urlErr) return rej('invalid url param');
+	if (urlErr) throw 'invalid url param';
 
 	let name = URL.parse(url).pathname.split('/').pop();
 	if (!validateFileName(name)) {
@@ -34,59 +33,35 @@ module.exports = (params, user) => new Promise((res, rej) => {
 
 	// Get 'folder_id' parameter
 	const [folderId = null, folderIdErr] = $(params.folder_id).optional.nullable.id().$;
-	if (folderIdErr) return rej('invalid folder_id param');
+	if (folderIdErr) throw 'invalid folder_id param';
 
 	// Create temp file
-	new Promise((res, rej) => {
+	const path = await new Promise((res: (string) => void, rej) => {
 		tmp.file((e, path) => {
 			if (e) return rej(e);
 			res(path);
 		});
-	})
-		// Download file
-		.then((path: string) => new Promise((res, rej) => {
-			const writable = fs.createWriteStream(path);
-			request(url)
-				.on('error', rej)
-				.on('end', () => {
-					writable.close();
-					res(path);
-				})
-				.pipe(writable)
-				.on('error', rej);
-		}))
-		// Calculate hash & content-type
-		.then((path: string) => new Promise((res, rej) => {
-			const readable = fs.createReadStream(path);
-			const hash = crypto.createHash('md5');
-			readable
-				.on('error', rej)
-				.on('end', () => {
-					hash.end();
-					res([path, hash.digest('hex')]);
-				})
-				.pipe(hash)
-				.on('error', rej);
-		}))
-		// Create file
-		.then((rv: string[]) => new Promise((res, rej) => {
-			const [path, hash] = rv;
-			create(user, {
-				stream: fs.createReadStream(path),
-				name,
-				hash
-			}, null, folderId)
-				.then(driveFile => {
-					res(driveFile);
-					// crean-up
-					fs.unlink(path, (e) => {
-						if (e) log(e.stack);
-					});
-				})
-				.catch(rej);
-		}))
-		// Serialize
-		.then(serialize)
-		.then(res)
-		.catch(rej);
-});
+	});
+
+	// write content at URL to temp file
+	await new Promise((res, rej) => {
+		const writable = fs.createWriteStream(path);
+		request(url)
+			.on('error', rej)
+			.on('end', () => {
+				writable.close();
+				res(path);
+			})
+			.pipe(writable)
+			.on('error', rej);
+	});
+
+	const driveFile = await create(user, path, name, null, folderId);
+
+	// clean-up
+	fs.unlink(path, (e) => {
+		if (e) log(e.stack);
+	});
+
+	return serialize(driveFile);
+};