diff --git a/styles/bootstrap/application.css b/styles/bootstrap/application.css
index 69397441a..a6226e66f 100644
--- a/styles/bootstrap/application.css
+++ b/styles/bootstrap/application.css
@@ -10,6 +10,7 @@ img.mimeicon {
   border-color: #CCCCCC #AAAAAA #999999 #CCCCCC;
   border-style: solid;
   border-width: 1px 2px 2px 1px;
+	background-color: white;
 }
 
 .list-action a {