diff --git a/ext/upload/style.css b/ext/upload/style.css
index 7102f3cc..d6d80384 100644
--- a/ext/upload/style.css
+++ b/ext/upload/style.css
@@ -6,8 +6,8 @@
 	width: auto;
 }
 #wrapper {
-    opacity : 0.4;
-    filter: alpha(opacity=40); // msie
+    opacity: 0.4;
+    filter: alpha(opacity=40); /* msie */
 }
 
 /* This is needed since the theme style.css forcibly sets vertical align to "top". */