diff --git a/mail/templates/default/app.css b/mail/templates/default/app.css
index 9f295b0900..0799300cb7 100644
--- a/mail/templates/default/app.css
+++ b/mail/templates/default/app.css
@@ -666,7 +666,6 @@ div.mailPreviewHeaders #mail-index_previewAttachmentArea.visible {
 	background-image: url(../../../phpgwapi/templates/default/images/ajax-loader.gif);
 	background-position: left top;
 	background-repeat: no-repeat;
-	background-color: rgba(255,255,255,0.5);
 }
 
 .mail_subscription_header
diff --git a/mail/templates/pixelegg/app.css b/mail/templates/pixelegg/app.css
index 629fc282ed..72892c1006 100755
--- a/mail/templates/pixelegg/app.css
+++ b/mail/templates/pixelegg/app.css
@@ -663,7 +663,6 @@ div.mailPreviewHeaders #mail-index_previewAttachmentArea.visible {
   background-image: url(../../../phpgwapi/templates/default/images/ajax-loader.gif);
   background-position: left top;
   background-repeat: no-repeat;
-  background-color: rgba(255, 255, 255, 0.5);
 }
 .mail_subscription_header {
   font-weight: bold;