diff --git a/tests/pass/concurrency/sync.rs b/tests/pass/concurrency/sync.rs
index 268153b612a..16bdc03f109 100644
--- a/tests/pass/concurrency/sync.rs
+++ b/tests/pass/concurrency/sync.rs
@@ -81,7 +81,7 @@ fn check_conditional_variables_timed_wait_notimeout() {
         cvar.notify_one();
     });
 
-    let (_guard, timeout) = cvar.wait_timeout(guard, Duration::from_millis(500)).unwrap();
+    let (_guard, timeout) = cvar.wait_timeout(guard, Duration::from_millis(1000)).unwrap();
     assert!(!timeout.timed_out());
     handle.join().unwrap();
 }