diff --git a/public/index.html b/public/index.html
index daaca17..784cad2 100644
--- a/public/index.html
+++ b/public/index.html
@@ -10,7 +10,7 @@
   <meta name="robots" content="index, nofollow, noarchive">
   <meta name="google" content="notranslate">
   <meta property="og:title" content="Fancy Flashcard">
-	<meta property="og:image" content="https://fancy-flashcard.github.io/ffc/img/icons/android-chrome-192x192.png">
+  <meta property="og:image" content="https://fancy-flashcard.github.io/ffc/img/icons/android-chrome-192x192.png">
   <link rel="icon" href="<%= BASE_URL %>favicon.ico">
   <link rel="stylesheet" href="https://fonts.googleapis.com/css?family=Roboto:100,300,400,500,700,900">
   <link rel="stylesheet" href="https://cdn.jsdelivr.net/npm/@mdi/font@latest/css/materialdesignicons.min.css">