diff --git a/homeassistant/components/lookin/config_flow.py b/homeassistant/components/lookin/config_flow.py
index e41aad0406b..af42febbb3f 100644
--- a/homeassistant/components/lookin/config_flow.py
+++ b/homeassistant/components/lookin/config_flow.py
@@ -31,8 +31,8 @@ class LookinFlowHandler(config_entries.ConfigFlow, domain=DOMAIN):
         self, discovery_info: zeroconf.ZeroconfServiceInfo
     ) -> FlowResult:
         """Start a discovery flow from zeroconf."""
-        uid: str = discovery_info["hostname"][: -len(".local.")]
-        host: str = discovery_info["host"]
+        uid: str = discovery_info[zeroconf.ATTR_HOSTNAME][: -len(".local.")]
+        host: str = discovery_info[zeroconf.ATTR_HOST]
         await self.async_set_unique_id(uid.upper())
         self._abort_if_unique_id_configured(updates={CONF_HOST: host})
 
diff --git a/tests/components/lookin/__init__.py b/tests/components/lookin/__init__.py
index c55b5228b47..911e984a57e 100644
--- a/tests/components/lookin/__init__.py
+++ b/tests/components/lookin/__init__.py
@@ -17,14 +17,14 @@ DEFAULT_ENTRY_TITLE = DEVICE_NAME
 
 ZC_NAME = f"LOOKin_{DEVICE_ID}"
 ZC_TYPE = "_lookin._tcp."
-ZEROCONF_DATA: ZeroconfServiceInfo = {
-    "host": IP_ADDRESS,
-    "hostname": f"{ZC_NAME.lower()}.local.",
-    "port": 80,
-    "type": ZC_TYPE,
-    "name": ZC_NAME,
-    "properties": {},
-}
+ZEROCONF_DATA = ZeroconfServiceInfo(
+    host=IP_ADDRESS,
+    hostname=f"{ZC_NAME.lower()}.local.",
+    port=80,
+    type=ZC_TYPE,
+    name=ZC_NAME,
+    properties={},
+)
 
 
 def _mocked_climate() -> Climate:
diff --git a/tests/components/lookin/test_config_flow.py b/tests/components/lookin/test_config_flow.py
index 92f6e500045..2050e80392d 100644
--- a/tests/components/lookin/test_config_flow.py
+++ b/tests/components/lookin/test_config_flow.py
@@ -6,6 +6,7 @@ from unittest.mock import patch
 from aiolookin import NoUsableService
 
 from homeassistant import config_entries
+from homeassistant.components import zeroconf
 from homeassistant.components.lookin.const import DOMAIN
 from homeassistant.const import CONF_HOST
 from homeassistant.core import HomeAssistant
@@ -138,7 +139,7 @@ async def test_discovered_zeroconf(hass):
 
     entry = hass.config_entries.async_entries(DOMAIN)[0]
     zc_data_new_ip = ZEROCONF_DATA.copy()
-    zc_data_new_ip["host"] = "127.0.0.2"
+    zc_data_new_ip[zeroconf.ATTR_HOST] = "127.0.0.2"
 
     with _patch_get_info(), patch(
         f"{MODULE}.async_setup_entry", return_value=True