diff --git a/resources/static/css/style.css b/resources/static/css/style.css
index 23781ec37d78e6dbb92f6b337e3e8432b4f6fd98..304ea1e671f1cfd9bae7ebedd3a4ed4c70c19b81 100644
--- a/resources/static/css/style.css
+++ b/resources/static/css/style.css
@@ -36,8 +36,7 @@ noscript {
 .waiting #errorBackground, .error #errorBackground, .delay #errorBackground {
   z-index: 1001;
   display: block;
-  -ms-filter:progid:DXImageTransform.Microsoft.gradient(startColorstr=#99000000,endColorstr=#99000000);
-  filter:progid:DXImageTransform.Microsoft.gradient(startColorstr=#99000000,endColorstr=#99000000);
+  -ms-filter:"progid:DXImageTransform.Microsoft.Alpha(Opacity=60)";
   opacity: .6;
 }