diff --git a/package.json b/package.json
index b167774c2..1f63eb121 100644
--- a/package.json
+++ b/package.json
@@ -109,6 +109,5 @@
   "lint-staged": {
     "*.{js,ts,jsx,tsx,css}": "yarn prettier",
     "src/**/*.md": "yarn fix-headings"
-  },
-  "packageManager": "yarn@1.22.22+sha512.a6b2f7906b721bba3d67d4aff083df04dad64c399707841b7acf00f6b133b7ac24255f2652fa22ae3534329dc6180534e98d17432037ff6fd140556e2bb3137e"
+  }
 }
diff --git a/src/utils/rss.js b/src/utils/rss.js
index 59f1880db..c6fb82410 100644
--- a/src/utils/rss.js
+++ b/src/utils/rss.js
@@ -56,7 +56,7 @@ exports.generateRssFeed = function () {
           `${id}: Blog posts must include an author in the metadata, for RSS feeds`
         );
       }
-      if (data.date == null || String(data.date).trim() === '') {
+      if (data.date == null || data.date.trim() === '') {
         throw new Error(
           `${id}: Blog posts must include a date in the metadata, for RSS feeds`
         );