diff --git a/install-usercss/install-usercss.js b/install-usercss/install-usercss.js
index 211e4e2f..c6221489 100644
--- a/install-usercss/install-usercss.js
+++ b/install-usercss/install-usercss.js
@@ -232,6 +232,7 @@
       .then(init)
       .catch(err => {
         $('#header').classList.add('meta-init-error');
+        console.error(err);
         showError(err);
       });
   }
diff --git a/js/usercss.js b/js/usercss.js
index 0e9b95a5..4c9d9ff8 100644
--- a/js/usercss.js
+++ b/js/usercss.js
@@ -41,8 +41,9 @@ const usercss = (() => {
       })
       .then(({metadata}) => {
         style.usercssData = metadata;
-        for (const [key, value = key] of Object.entries(GLOBAL_METAS)) {
-          style[value] = metadata[key];
+        // https://github.com/openstyles/stylus/issues/560#issuecomment-440561196
+        for (const [key, value] of Object.entries(GLOBAL_METAS)) {
+          style[value || key] = metadata[key];
         }
         return style;
       });