diff --git a/index.js b/index.js
index e11a42b..de4d11d 100644
--- a/index.js
+++ b/index.js
@@ -27,7 +27,7 @@ module.exports = function (source) {
         document
           .querySelectorAll("link[href][rel=stylesheet]")
           .forEach(function(link) {
-            if (!link.href.match(prefix) || link.stale) return;
+            if (!link.href.match(prefix) || link.stale) return;
             injectCss(link, link.href.split("?")[0] + "?unix=${+new Date()}");
           });
       }