diff --git a/packages/autoupdate/autoupdate_client.js b/packages/autoupdate/autoupdate_client.js
index 21d6fd2823..65c1f625a9 100644
--- a/packages/autoupdate/autoupdate_client.js
+++ b/packages/autoupdate/autoupdate_client.js
@@ -127,7 +127,7 @@ Autoupdate._retrySubscription = function () {
                 newLink.setAttribute("rel", "stylesheet");
                 newLink.setAttribute("type", "text/css");
                 newLink.setAttribute("class", "__meteor-css__");
-                newLink.setAttribute("href", css.url);
+                newLink.setAttribute("href", __meteor_runtime_config__.ROOT_URL_PATH_PREFIX + css.url);
                 attachStylesheetLink(newLink);
               });
             } else {