diff --git a/select2.css b/select2.css
index 383867eb..0e72e293 100644
--- a/select2.css
+++ b/select2.css
@@ -124,7 +124,6 @@ Version: @@ver@@ Timestamp: @@timestamp@@
     z-index: 9998;
     /* styles required for IE to work */
     background-color: #fff;
-    opacity: 0;
     filter: alpha(opacity=0);
 }