diff --git a/homeassistant/components/melcloud_home/diagnostics.py b/homeassistant/components/melcloud_home/diagnostics.py
index bf15bd85a356..d1e01296f3e5 100644
--- a/homeassistant/components/melcloud_home/diagnostics.py
+++ b/homeassistant/components/melcloud_home/diagnostics.py
@@ -3,7 +3,7 @@
 from typing import Any
 
 from homeassistant.components.diagnostics import async_redact_data
-from homeassistant.const import CONF_EMAIL, CONF_PASSWORD
+from homeassistant.const import CONF_EMAIL, CONF_PASSWORD, CONF_UNIQUE_ID
 from homeassistant.core import HomeAssistant
 
 from .coordinator import MelCloudHomeConfigEntry
@@ -14,7 +14,7 @@ TO_REDACT = [
     "first_name",
     "last_name",
     "title",
-    "unique_id",
+    CONF_UNIQUE_ID,
     "id",
 ]