diff --git a/homeassistant/components/ambient_station/__init__.py b/homeassistant/components/ambient_station/__init__.py
index 6dee4637a96..944d4e14e7d 100644
--- a/homeassistant/components/ambient_station/__init__.py
+++ b/homeassistant/components/ambient_station/__init__.py
@@ -329,6 +329,8 @@ class AmbientStation:
             """Define a handler to fire when the websocket is connected."""
             _LOGGER.info('Connected to websocket')
             _LOGGER.debug('Watchdog starting')
+            if self._watchdog_listener:
+                self._watchdog_listener()
             self._watchdog_listener = async_call_later(
                 self._hass, DEFAULT_WATCHDOG_SECONDS, _ws_reconnect)