diff --git a/lib/javascript-static.js b/lib/javascript-static.js
index f19b97b63ee..5bbc9c3e5e9 100644
--- a/lib/javascript-static.js
+++ b/lib/javascript-static.js
@@ -1692,7 +1692,7 @@ M.util.load_flowplayer = function() {
                     rule = '';
                     if (/^\.mp3flowplayer_.*Color$/.test(allrules[i].selectorText)) {
                         if (typeof(allrules[i].cssText) != 'undefined') {
-                            rule = allrules[i].style.cssText;
+                            rule = allrules[i].cssText;
                         } else if (typeof(allrules[i].style.cssText) != 'undefined') {
                             rule = allrules[i].style.cssText;
                         }