diff --git a/.eslintrc b/.eslintrc
index ef91911..35455f5 100644
--- a/.eslintrc
+++ b/.eslintrc
@@ -9,9 +9,9 @@
   "extends": ["eslint:recommended", "plugin:prettier/recommended"],
   "parserOptions": {
     "sourceType": "module",
-    "ecmaVersion": 2018
+    "ecmaVersion": 2020
   },
   "rules": {
     "linebreak-style": ["error", "unix"]
   }
-}
\ No newline at end of file
+}
diff --git a/.prettierrc b/.prettierrc
index 92cde39..76e396e 100644
--- a/.prettierrc
+++ b/.prettierrc
@@ -1,3 +1,4 @@
 {
-  "singleQuote": true
+  "singleQuote": true,
+  "semi": true
 }
\ No newline at end of file
diff --git a/app/scripts/background.js b/app/scripts/background.js
index eb3cfb7..bb7cf55 100644
--- a/app/scripts/background.js
+++ b/app/scripts/background.js
@@ -1,4 +1,5 @@
 import Aria2 from 'aria2';
+import { filter, Observable, take } from 'rxjs';
 
 function validateUrl(value) {
   return /^(?:(?:(?:https?|ftp):)?\/\/)(?:\S+(?::\S*)?@)?(?:(?!(?:10|127)(?:\.\d{1,3}){3})(?!(?:169\.254|192\.168)(?:\.\d{1,3}){2})(?!172\.(?:1[6-9]|2\d|3[0-1])(?:\.\d{1,3}){2})(?:[1-9]\d?|1\d\d|2[01]\d|22[0-3])(?:\.(?:1?\d{1,2}|2[0-4]\d|25[0-5])){2}(?:\.(?:[1-9]\d?|1\d\d|2[0-4]\d|25[0-4]))|(?:(?:[a-z0-9\u00a1-\uffff][a-z0-9\u00a1-\uffff_-]{0,62})?[a-z0-9\u00a1-\uffff]\.)+(?:[a-z\u00a1-\uffff]{2,}\.?))(?::\d{2,5})?(?:[/?#]\S*)?$/i.test(
@@ -7,7 +8,14 @@ function validateUrl(value) {
 }
 
 function downloadAgent() {
-  browser.downloads.onCreated.addListener(function (downloadItem) {
+  const subscribers = [];
+  const observable = new Observable((s) => subscribers.push(s));
+
+  chrome.downloads.onChanged.addListener((delta) => {
+    subscribers.forEach((s) => s.next(delta));
+  });
+
+  chrome.downloads.onCreated.addListener(function (downloadItem) {
     if (downloadItem.state !== 'in_progress') {
       return;
     }
@@ -49,7 +57,7 @@ function downloadAgent() {
         if (downloadItem.filename) {
           let directory, filename;
           filename = downloadItem.filename.replace(/^.*[\\/]/, '');
-          directory = downloadItem.filename.match(/(.*)[/\\]/)[1] || '';
+          directory = downloadItem.filename.match(/(.*)[/\\]/)?.[1] ?? '';
           // Appends path to the options
           params = {
             dir: directory,
@@ -66,18 +74,18 @@ function downloadAgent() {
           .call('addUri', [downloadUrl], params)
           .then(async () => {
             // Added successfully: Cancels and removes the download from browser download manager
-            function onFinished() {}
+            function pass() {}
 
             function onError(error) {
               console.error(`Error: ${error}`);
             }
 
             const removing = browser.downloads.removeFile(downloadItem.id);
-            removing.then(onFinished).catch(onError);
+            removing.then(pass).catch(pass);
             const canceling = browser.downloads.cancel(downloadItem.id);
-            canceling.then(onFinished).catch(onError);
+            canceling.then(pass).catch(onError);
             const erasing = browser.downloads.erase({ id: downloadItem.id });
-            erasing.then(onFinished).catch(onError);
+            erasing.then(pass).catch(onError);
 
             // Shows notification
             if (result.enablenotifications) {
@@ -97,7 +105,6 @@ function downloadAgent() {
                 }
               });
             }
-            setTimeout(() => browser.runtime.reload(), 1000);
           })
           .catch((err) => {
             console.error(err);
@@ -120,7 +127,21 @@ function downloadAgent() {
       'extensionstatus',
       'enablenotifications',
     ]);
-    getResult.then(onGot, onError);
+
+    getResult.then((result) => {
+      // wait for filename to be set
+      if (downloadItem.filename == null || downloadItem.filename === '') {
+        observable
+          .pipe(
+            filter((delta) => delta.id === downloadItem.id && delta.filename),
+            take(1)
+          )
+          .subscribe((delta) => {
+            downloadItem.filename = delta.filename.current;
+            onGot(result);
+          });
+      }
+    }, onError);
   });
 }
 
diff --git a/package.json b/package.json
index 5b81eec..a5698e1 100644
--- a/package.json
+++ b/package.json
@@ -20,6 +20,7 @@
     "webextension-toolbox": "4.0.3"
   },
   "dependencies": {
-    "aria2": "^4.1.2"
+    "aria2": "^4.1.2",
+    "rxjs": "^7.3.0"
   }
 }
diff --git a/yarn.lock b/yarn.lock
index 06b3fc1..bb264d7 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -2680,6 +2680,13 @@ run-parallel@^1.1.9:
   dependencies:
     queue-microtask "^1.2.2"
 
+rxjs@^7.3.0:
+  version "7.3.0"
+  resolved "https://registry.yarnpkg.com/rxjs/-/rxjs-7.3.0.tgz#39fe4f3461dc1e50be1475b2b85a0a88c1e938c6"
+  integrity sha512-p2yuGIg9S1epc3vrjKf6iVb3RCaAYjYskkO+jHIaV0IjOPlJop4UnodOoFb2xeNwlguqLYvGw1b1McillYb5Gw==
+  dependencies:
+    tslib "~2.1.0"
+
 safe-buffer@^5.1.0:
   version "5.2.1"
   resolved "https://registry.yarnpkg.com/safe-buffer/-/safe-buffer-5.2.1.tgz#1eaf9fa9bdb1fdd4ec75f58f9cdb4e6b7827eec6"
@@ -2919,6 +2926,11 @@ to-regex-range@^5.0.1:
   dependencies:
     is-number "^7.0.0"
 
+tslib@~2.1.0:
+  version "2.1.0"
+  resolved "https://registry.yarnpkg.com/tslib/-/tslib-2.1.0.tgz#da60860f1c2ecaa5703ab7d39bc05b6bf988b97a"
+  integrity sha512-hcVC3wYEziELGGmEEXue7D75zbwIIVUMWAVbHItGPx0ziyXxrOMQx4rQEVEV45Ut/1IotuEvwqPopzIOkDMf0A==
+
 type-check@^0.4.0, type-check@~0.4.0:
   version "0.4.0"
   resolved "https://registry.yarnpkg.com/type-check/-/type-check-0.4.0.tgz#07b8203bfa7056c0657050e3ccd2c37730bab8f1"