diff --git a/homeassistant/components/home_connect/diagnostics.py b/homeassistant/components/home_connect/diagnostics.py
index fd74277a815..59856999ec7 100644
--- a/homeassistant/components/home_connect/diagnostics.py
+++ b/homeassistant/components/home_connect/diagnostics.py
@@ -4,8 +4,6 @@ from __future__ import annotations
 
 from typing import Any
 
-from aiohomeconnect.client import Client as HomeConnectClient
-
 from homeassistant.core import HomeAssistant
 from homeassistant.helpers.device_registry import DeviceEntry
 
@@ -14,7 +12,7 @@ from .coordinator import HomeConnectApplianceData, HomeConnectConfigEntry
 
 
 async def _generate_appliance_diagnostics(
-    client: HomeConnectClient, appliance: HomeConnectApplianceData
+    appliance: HomeConnectApplianceData,
 ) -> dict[str, Any]:
     return {
         **appliance.info.to_dict(),
@@ -31,9 +29,7 @@ async def async_get_config_entry_diagnostics(
 ) -> dict[str, Any]:
     """Return diagnostics for a config entry."""
     return {
-        appliance.info.ha_id: await _generate_appliance_diagnostics(
-            entry.runtime_data.client, appliance
-        )
+        appliance.info.ha_id: await _generate_appliance_diagnostics(appliance)
         for appliance in entry.runtime_data.data.values()
     }
 
@@ -45,6 +41,4 @@ async def async_get_device_diagnostics(
     ha_id = next(
         (identifier[1] for identifier in device.identifiers if identifier[0] == DOMAIN),
     )
-    return await _generate_appliance_diagnostics(
-        entry.runtime_data.client, entry.runtime_data.data[ha_id]
-    )
+    return await _generate_appliance_diagnostics(entry.runtime_data.data[ha_id])