diff --git a/python/lvmecp/actor/commands/heartbeat.py b/python/lvmecp/actor/commands/heartbeat.py
index 2280704..8eb8c78 100644
--- a/python/lvmecp/actor/commands/heartbeat.py
+++ b/python/lvmecp/actor/commands/heartbeat.py
@@ -25,5 +25,5 @@ async def heartbeat(command: ECPCommand):
         await command.actor.plc.modbus["hb_set"].set(True)
     except Exception:
         return command.fail("Failed to set heartbeat.")
-    finally:
+    else:
         return command.finish()