diff --git a/gallery.html b/gallery.html
index 071b7f09..d097768d 100644
--- a/gallery.html
+++ b/gallery.html
@@ -8,7 +8,7 @@
 <link rel="stylesheet" href="css/gallery.css" type="text/css"/>
 <!--[if IE 6]><link rel="stylesheet" href="css/ie6.css" type="text/css" media="all" /><![endif]-->
 <!-- Global site tag (gtag.js) - Google Analytics -->
-<script async src="https://www.googletagmanager.com/gtag/js?id=UA-110140219-1"></script>
+<script type="text/javascript" async="async" src="https://www.googletagmanager.com/gtag/js?id=UA-110140219-1"></script>
 <script>
   window.dataLayer = window.dataLayer || [];
   function gtag(){dataLayer.push(arguments);}
diff --git a/index.html b/index.html
index 64a5acd8..2fc62cb2 100644
--- a/index.html
+++ b/index.html
@@ -11,7 +11,7 @@
 <script type="text/javascript" src="js/jquery.jcarousel.js" ></script>
 <script type="text/javascript" src="js/js-func.js"></script>
 <!-- Global site tag (gtag.js) - Google Analytics -->
-<script async src="https://www.googletagmanager.com/gtag/js?id=UA-110140219-1"></script>
+<script type="text/javascript" async="async" src="https://www.googletagmanager.com/gtag/js?id=UA-110140219-1"></script>
 <script>
   window.dataLayer = window.dataLayer || [];
   function gtag(){dataLayer.push(arguments);}