diff --git a/src/test/java/org/syndicate_lang/actors/example/example2/Main.java b/src/test/java/org/syndicate_lang/actors/example/example2/Main.java
index b5a3325..0c3c536 100644
--- a/src/test/java/org/syndicate_lang/actors/example/example2/Main.java
+++ b/src/test/java/org/syndicate_lang/actors/example/example2/Main.java
@@ -49,7 +49,9 @@ public class Main implements IForwarder {
             long nMessages = _nActors * _nRounds;
             double hz = nMessages / (delta / 1000.0);
             Actor.current().stop();
-            Actor.log().info("Stop after " + nMessages + " messages; " + hz + " Hz");
+            Actor.log().info(String.format("Stop after %d messages; %.1f Hz",
+                    nMessages,
+                    hz));
         }
     }
 }