diff --git a/example/heartbeat_timer.cpp b/example/heartbeat_timer.cpp
index 63c33c0..f71af3c 100644
--- a/example/heartbeat_timer.cpp
+++ b/example/heartbeat_timer.cpp
@@ -39,8 +39,9 @@
     fprintf(stderr, "Beating every %u seconds\n", interval);
 
     auto event = Event::get_default();
-    Timer timer(event, [](Timer&) { printf("Beat\n"); },
-                std::chrono::seconds{interval});
+    Timer timer(
+        event, [](Timer&) { printf("Beat\n"); },
+        std::chrono::seconds{interval});
     stdplus::signal::block(SIGINT);
     Signal signal(event, SIGINT, intCb);
     return event.loop();