diff --git a/resources/static/css/style.css b/resources/static/css/style.css
index 4a14f748919d0c2ada8eb04f14bea43cff2c5433..00b561a12fae1d6333e302dbd391c089012d09ed 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;
 }