diff --git a/scripts/msg_stats.py b/scripts/msg_stats.py
index 797321514efd53eba77e8135a55aff8dbfc032c8..b8c6c97f753a41e3ba6ec018b40c24aee44a491a 100644
--- a/scripts/msg_stats.py
+++ b/scripts/msg_stats.py
@@ -110,7 +110,7 @@ def run():
     eng.subscribe(count)
 
     eng.on_start(on_start)
-    eng.on_start(on_start)
+    eng.on_stop(on_stop)
     eng.run()