diff --git a/std/src/sys/pal/hermit/thread.rs b/std/src/sys/pal/hermit/thread.rs
index bc70b3ac1705c..4c0c0919f4799 100644
--- a/std/src/sys/pal/hermit/thread.rs
+++ b/std/src/sys/pal/hermit/thread.rs
@@ -78,9 +78,10 @@ impl Thread {
     #[inline]
     pub fn sleep(dur: Duration) {
         let micros = dur.as_micros() + if dur.subsec_nanos() % 1_000 > 0 { 1 } else { 0 };
+        let micros = u64::try_from(micros).unwrap_or(u64::MAX);
 
         unsafe {
-            hermit_abi::usleep(micros as u64);
+            hermit_abi::usleep(micros);
         }
     }