diff --git a/public/images/transparent.png b/public/images/transparent.png
new file mode 100644
index 000000000..221fc86fd
Binary files /dev/null and b/public/images/transparent.png differ
diff --git a/public/stylesheets/application.css b/public/stylesheets/application.css
index 1a46ac16d..6abf7788c 100644
--- a/public/stylesheets/application.css
+++ b/public/stylesheets/application.css
@@ -1390,6 +1390,8 @@ color: #555; text-shadow: 1px 1px 0 #fff;
 
 .repository-graph {width:75%; margin-bottom:2em;}
 
+img.filecontent.image {background-image: url(../images/transparent.png);}
+
 /* Custom JQuery styles */
 .ui-datepicker-title select {width:70px !important; margin-top:-2px !important; margin-right:4px !important;}