diff --git a/src/lib.rs b/src/lib.rs
index dc22b18..14fd0fd 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -22,7 +22,6 @@ const ZULIP_INTERVAL: Duration = Duration::from_millis(250);
 const ZULIP_MESSAGE_CUTOFF: usize = 700;
 
 const LAST_FETCHED: DateTime<Utc> = DateTime::from_timestamp_nanos(0);
-const ONE_YEAR: Duration = Duration::from_secs(365 * 24 * 60 * 60);
 
 pub struct BlogdorTheAggregator {
     db: SqlitePool,
@@ -252,12 +251,12 @@ impl BlogdorTheAggregator {
 }
 
 trait Posted {
-    fn posted(&self) -> DateTime<Utc>;
+    fn posted(&self) -> Option<DateTime<Utc>>;
 }
 
 impl Posted for feed_rs::model::Entry {
-    fn posted(&self) -> DateTime<Utc> {
-        self.published.or(self.updated).unwrap_or(LAST_FETCHED)
+    fn posted(&self) -> Option<DateTime<Utc>> {
+        self.published.or(self.updated)
     }
 }
 
@@ -291,9 +290,9 @@ async fn check_feed(
         .map_err(|e| format!("could not get bytes from response from {url}, got {e}"))?;
     let mut feed =
         parse(feed.reader()).map_err(|e| format!("could not parse feed from {url}, got {e}"))?;
-    feed.entries.sort_by_key(|e| e.posted());
-    for post in feed.entries.into_iter().rev().take(5) {
-        if post.posted() > last_fetched {
+    feed.entries.sort_by_key(|e| std::cmp::Reverse(e.posted()));
+    for post in feed.entries.into_iter().take(5) {
+        if post.posted().unwrap_or(LAST_FETCHED) > last_fetched {
             let entry = FeedEntry {
                 post_url: post
                     .links