diff --git a/src/tab.rs b/src/tab.rs
index 0da0db2..d11a170 100644
--- a/src/tab.rs
+++ b/src/tab.rs
@@ -437,7 +437,9 @@ impl<'a> FormatTime<'a> {
 
 impl Display for FormatTime<'_> {
     fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
-        let zoned = jiff::Zoned::try_from(self.time).unwrap();
+        let Ok(zoned) = jiff::Zoned::try_from(self.time) else {
+            return Ok(());
+        };
         let now = jiff::Zoned::now();
         let icu_datetime = DateTime::convert_from(zoned.datetime());
         if zoned.date() == now.date() {
@@ -1909,7 +1911,7 @@ impl ItemMetadata {
             Self::Path { metadata, .. } => metadata.modified().ok(),
             #[cfg(feature = "gvfs")]
             Self::GvfsPath { mtime, .. } => {
-                Some(SystemTime::UNIX_EPOCH + Duration::from_secs(*mtime))
+                SystemTime::UNIX_EPOCH.checked_add(Duration::from_secs(*mtime))
             }
             _ => None,
         }