diff --git a/src/clock.rs b/src/clock.rs
index 6c689cc..0e622f3 100644
--- a/src/clock.rs
+++ b/src/clock.rs
@@ -78,7 +78,7 @@ mod clocks {
         );
         assert!(
             msg2.get_data("time").unwrap().to_datetime().unwrap()
-                > msg1.get_data("time").unwrap().to_datetime().unwrap(),
+                >= msg1.get_data("time").unwrap().to_datetime().unwrap() + SLEEP_FOR,
             "shoould present the latest time"
         );
     }