diff --git a/sim/src/models/stopwatch.rs b/sim/src/models/stopwatch.rs
index 8a83d1a..780f848 100644
--- a/sim/src/models/stopwatch.rs
+++ b/sim/src/models/stopwatch.rs
@@ -276,7 +276,7 @@ impl AsModel for Stopwatch {
             .map(|(_, duration)| duration)
             .collect();
         format![
-            "Average {:.3} sec",
+            "Average {:.3}",
             durations.iter().sum::<f64>() / durations.len() as f64
         ]
     }