diff --git a/homeassistant/components/simplisafe/__init__.py b/homeassistant/components/simplisafe/__init__.py
index 8fc4c919ed8..3647c1bda57 100644
--- a/homeassistant/components/simplisafe/__init__.py
+++ b/homeassistant/components/simplisafe/__init__.py
@@ -80,7 +80,6 @@ from .const import (
     ATTR_LIGHT,
     ATTR_VOICE_PROMPT_VOLUME,
     CONF_USER_ID,
-    DATA_CLIENT,
     DOMAIN,
     LOGGER,
 )
@@ -223,9 +222,6 @@ def _async_register_base_station(
 
 async def async_setup_entry(hass: HomeAssistant, entry: ConfigEntry) -> bool:
     """Set up SimpliSafe as config entry."""
-    hass.data.setdefault(DOMAIN, {})
-    hass.data[DOMAIN][entry.entry_id] = {}
-
     _async_standardize_config_entry(hass, entry)
 
     _verify_domain_control = verify_domain_control(hass, DOMAIN)
@@ -248,7 +244,9 @@ async def async_setup_entry(hass: HomeAssistant, entry: ConfigEntry) -> bool:
     except SimplipyError as err:
         raise ConfigEntryNotReady from err
 
-    hass.data[DOMAIN][entry.entry_id][DATA_CLIENT] = simplisafe
+    hass.data.setdefault(DOMAIN, {})
+    hass.data[DOMAIN][entry.entry_id] = simplisafe
+
     hass.config_entries.async_setup_platforms(entry, PLATFORMS)
 
     @callback
diff --git a/homeassistant/components/simplisafe/alarm_control_panel.py b/homeassistant/components/simplisafe/alarm_control_panel.py
index bc2e2a8ac74..15887b91532 100644
--- a/homeassistant/components/simplisafe/alarm_control_panel.py
+++ b/homeassistant/components/simplisafe/alarm_control_panel.py
@@ -60,7 +60,6 @@ from .const import (
     ATTR_EXIT_DELAY_HOME,
     ATTR_LIGHT,
     ATTR_VOICE_PROMPT_VOLUME,
-    DATA_CLIENT,
     DOMAIN,
     LOGGER,
 )
@@ -123,7 +122,7 @@ async def async_setup_entry(
     hass: HomeAssistant, entry: ConfigEntry, async_add_entities: AddEntitiesCallback
 ) -> None:
     """Set up a SimpliSafe alarm control panel based on a config entry."""
-    simplisafe = hass.data[DOMAIN][entry.entry_id][DATA_CLIENT]
+    simplisafe = hass.data[DOMAIN][entry.entry_id]
     async_add_entities(
         [SimpliSafeAlarm(simplisafe, system) for system in simplisafe.systems.values()],
         True,
diff --git a/homeassistant/components/simplisafe/binary_sensor.py b/homeassistant/components/simplisafe/binary_sensor.py
index f276a5fea66..eef38ffe003 100644
--- a/homeassistant/components/simplisafe/binary_sensor.py
+++ b/homeassistant/components/simplisafe/binary_sensor.py
@@ -21,7 +21,7 @@ from homeassistant.core import HomeAssistant, callback
 from homeassistant.helpers.entity_platform import AddEntitiesCallback
 
 from . import SimpliSafe, SimpliSafeEntity
-from .const import DATA_CLIENT, DOMAIN, LOGGER
+from .const import DOMAIN, LOGGER
 
 SUPPORTED_BATTERY_SENSOR_TYPES = [
     DeviceTypes.carbon_monoxide,
@@ -50,7 +50,7 @@ async def async_setup_entry(
     hass: HomeAssistant, entry: ConfigEntry, async_add_entities: AddEntitiesCallback
 ) -> None:
     """Set up SimpliSafe binary sensors based on a config entry."""
-    simplisafe = hass.data[DOMAIN][entry.entry_id][DATA_CLIENT]
+    simplisafe = hass.data[DOMAIN][entry.entry_id]
 
     sensors: list[BatteryBinarySensor | TriggeredBinarySensor] = []
 
diff --git a/homeassistant/components/simplisafe/const.py b/homeassistant/components/simplisafe/const.py
index a0073fa8122..658ddfc13a6 100644
--- a/homeassistant/components/simplisafe/const.py
+++ b/homeassistant/components/simplisafe/const.py
@@ -16,5 +16,3 @@ ATTR_LIGHT = "light"
 ATTR_VOICE_PROMPT_VOLUME = "voice_prompt_volume"
 
 CONF_USER_ID = "user_id"
-
-DATA_CLIENT = "client"
diff --git a/homeassistant/components/simplisafe/lock.py b/homeassistant/components/simplisafe/lock.py
index dc09eb0b62e..263fd54f9d6 100644
--- a/homeassistant/components/simplisafe/lock.py
+++ b/homeassistant/components/simplisafe/lock.py
@@ -19,7 +19,7 @@ from homeassistant.core import HomeAssistant, callback
 from homeassistant.helpers.entity_platform import AddEntitiesCallback
 
 from . import SimpliSafe, SimpliSafeEntity
-from .const import DATA_CLIENT, DOMAIN, LOGGER
+from .const import DOMAIN, LOGGER
 
 ATTR_LOCK_LOW_BATTERY = "lock_low_battery"
 ATTR_PIN_PAD_LOW_BATTERY = "pin_pad_low_battery"
@@ -37,7 +37,7 @@ async def async_setup_entry(
     hass: HomeAssistant, entry: ConfigEntry, async_add_entities: AddEntitiesCallback
 ) -> None:
     """Set up SimpliSafe locks based on a config entry."""
-    simplisafe = hass.data[DOMAIN][entry.entry_id][DATA_CLIENT]
+    simplisafe = hass.data[DOMAIN][entry.entry_id]
     locks = []
 
     for system in simplisafe.systems.values():
diff --git a/homeassistant/components/simplisafe/sensor.py b/homeassistant/components/simplisafe/sensor.py
index 97edd3008dd..0fb9c129a7c 100644
--- a/homeassistant/components/simplisafe/sensor.py
+++ b/homeassistant/components/simplisafe/sensor.py
@@ -12,14 +12,14 @@ from homeassistant.core import HomeAssistant, callback
 from homeassistant.helpers.entity_platform import AddEntitiesCallback
 
 from . import SimpliSafe, SimpliSafeEntity
-from .const import DATA_CLIENT, DOMAIN, LOGGER
+from .const import DOMAIN, LOGGER
 
 
 async def async_setup_entry(
     hass: HomeAssistant, entry: ConfigEntry, async_add_entities: AddEntitiesCallback
 ) -> None:
     """Set up SimpliSafe freeze sensors based on a config entry."""
-    simplisafe = hass.data[DOMAIN][entry.entry_id][DATA_CLIENT]
+    simplisafe = hass.data[DOMAIN][entry.entry_id]
     sensors = []
 
     for system in simplisafe.systems.values():