diff --git a/homeassistant/components/unifi/diagnostics.py b/homeassistant/components/unifi/diagnostics.py
index 4f27ff4ff4f..ed059856881 100644
--- a/homeassistant/components/unifi/diagnostics.py
+++ b/homeassistant/components/unifi/diagnostics.py
@@ -7,14 +7,14 @@ from typing import Any
 
 from homeassistant.components.diagnostics import REDACTED, async_redact_data
 from homeassistant.config_entries import ConfigEntry
-from homeassistant.const import CONF_PASSWORD, CONF_USERNAME
+from homeassistant.const import CONF_HOST, CONF_PASSWORD, CONF_USERNAME
 from homeassistant.core import HomeAssistant, callback
 from homeassistant.helpers.device_registry import format_mac
 
 from .const import CONF_CONTROLLER, DOMAIN as UNIFI_DOMAIN
 
 TO_REDACT = {CONF_CONTROLLER, CONF_PASSWORD}
-REDACT_CONFIG = {CONF_CONTROLLER, CONF_PASSWORD, CONF_USERNAME}
+REDACT_CONFIG = {CONF_CONTROLLER, CONF_HOST, CONF_PASSWORD, CONF_USERNAME}
 REDACT_CLIENTS = {"bssid", "essid"}
 REDACT_DEVICES = {
     "anon_id",
diff --git a/tests/components/unifi/test_diagnostics.py b/tests/components/unifi/test_diagnostics.py
index 3de9393e5b9..ccec7fcb48a 100644
--- a/tests/components/unifi/test_diagnostics.py
+++ b/tests/components/unifi/test_diagnostics.py
@@ -122,7 +122,7 @@ async def test_entry_diagnostics(hass, hass_client, aioclient_mock):
         "config": {
             "data": {
                 "controller": REDACTED,
-                "host": "1.2.3.4",
+                "host": REDACTED,
                 "password": REDACTED,
                 "port": 1234,
                 "site": "site_id",