diff --git a/css/quicklook.css b/css/quicklook.css
index 45989a7b4..0c9611777 100644
--- a/css/quicklook.css
+++ b/css/quicklook.css
@@ -457,7 +457,6 @@ pre.elfinder-quicklook-preview-text.prettyprint {
     padding: 3px 9px;
     border: none;
     overflow: visible;
-    background: #fff;
     -o-tab-size: 4;
     -moz-tab-size: 4;
     tab-size: 4;