diff --git a/homeassistant/components/rainbird/__init__.py b/homeassistant/components/rainbird/__init__.py
index 97dec9a681e..db88902bc3e 100644
--- a/homeassistant/components/rainbird/__init__.py
+++ b/homeassistant/components/rainbird/__init__.py
@@ -65,8 +65,6 @@ def _async_register_clientsession_shutdown(
 async def async_setup_entry(hass: HomeAssistant, entry: RainbirdConfigEntry) -> bool:
     """Set up the config entry for Rain Bird."""
 
-    hass.data.setdefault(DOMAIN, {})
-
     clientsession = async_create_clientsession()
     _async_register_clientsession_shutdown(hass, entry, clientsession)