diff --git a/os-league-tools-master/src/App.js b/os-league-tools-master/src/App.js
index 08a2d9b1..3545171e 100644
--- a/os-league-tools-master/src/App.js
+++ b/os-league-tools-master/src/App.js
@@ -41,11 +41,10 @@ history.listen(() => {
   }
 });
 
-const isDevEnvironment = () => {
-  return window.location.hostname.startsWith('dev.') ||
-         window.location.hostname === 'localhost' ||
-         window.location.port === '3001';
-};
+const isDevEnvironment = () =>
+  window.location.hostname.startsWith('dev.') ||
+  window.location.hostname === 'localhost' ||
+  window.location.port === '3001';
 
 export default function App() {
   useEffect(() => {
@@ -60,11 +59,13 @@ export default function App() {
 
   // Prefix title with [DEV] on dev environment
   useEffect(() => {
-    if (!isDevEnvironment()) return;
+    if (!isDevEnvironment()) {
+      return undefined;
+    }
 
     const prefixTitle = () => {
       if (!document.title.startsWith('[DEV] ')) {
-        document.title = '[DEV] ' + document.title;
+        document.title = `[DEV] ${document.title}`;
       }
     };