diff --git a/index.html b/index.html
index d4ab9d6..1ef9644 100644
--- a/index.html
+++ b/index.html
@@ -5,7 +5,7 @@
   <meta charset="UTF-8" />
   <link rel="shortcut icon" href="favicon.ico" type="image/x-icon">
   <meta name="viewport" content="width=device-width, initial-scale=1.0" />
-  <link rel="stylesheet" href="style.css" />
+  <link rel="stylesheet" href="style.css" type="text/css" />
   <title>Tetris js</title>
 </head>