diff --git a/homeassistant/components/google_travel_time/config_flow.py b/homeassistant/components/google_travel_time/config_flow.py
index 133baddf704..d9218566bcb 100644
--- a/homeassistant/components/google_travel_time/config_flow.py
+++ b/homeassistant/components/google_travel_time/config_flow.py
@@ -8,7 +8,7 @@ from homeassistant.const import CONF_API_KEY, CONF_MODE, CONF_NAME
 from homeassistant.core import HomeAssistant, callback
 from homeassistant.data_entry_flow import FlowResult
 import homeassistant.helpers.config_validation as cv
-from homeassistant.util.unit_system import IMPERIAL_SYSTEM
+from homeassistant.util.unit_system import US_CUSTOMARY_SYSTEM
 
 from .const import (
     ALL_LANGUAGES,
@@ -46,7 +46,7 @@ def default_options(hass: HomeAssistant) -> dict[str, str | None]:
     return {
         CONF_MODE: "driving",
         CONF_UNITS: (
-            UNITS_IMPERIAL if hass.config.units is IMPERIAL_SYSTEM else UNITS_METRIC
+            UNITS_IMPERIAL if hass.config.units is US_CUSTOMARY_SYSTEM else UNITS_METRIC
         ),
     }
 
diff --git a/homeassistant/components/waze_travel_time/config_flow.py b/homeassistant/components/waze_travel_time/config_flow.py
index 348b48e3368..fd6747cc1c8 100644
--- a/homeassistant/components/waze_travel_time/config_flow.py
+++ b/homeassistant/components/waze_travel_time/config_flow.py
@@ -8,7 +8,7 @@ from homeassistant.const import CONF_NAME, CONF_REGION
 from homeassistant.core import HomeAssistant, callback
 from homeassistant.data_entry_flow import FlowResult
 import homeassistant.helpers.config_validation as cv
-from homeassistant.util.unit_system import IMPERIAL_SYSTEM
+from homeassistant.util.unit_system import US_CUSTOMARY_SYSTEM
 
 from .const import (
     CONF_AVOID_FERRIES,
@@ -35,7 +35,7 @@ from .helpers import is_valid_config_entry
 def default_options(hass: HomeAssistant) -> dict[str, str | bool]:
     """Get the default options."""
     defaults = DEFAULT_OPTIONS.copy()
-    if hass.config.units is IMPERIAL_SYSTEM:
+    if hass.config.units is US_CUSTOMARY_SYSTEM:
         defaults[CONF_UNITS] = IMPERIAL_UNITS
     return defaults
 
diff --git a/pylint/plugins/hass_imports.py b/pylint/plugins/hass_imports.py
index 3d2f747ca7b..678773abcb9 100644
--- a/pylint/plugins/hass_imports.py
+++ b/pylint/plugins/hass_imports.py
@@ -296,6 +296,12 @@ _OBSOLETE_IMPORT: dict[str, list[ObsoleteImportMatch]] = {
             constant=re.compile(r"^(distance|pressure|speed|temperature|volume)$"),
         ),
     ],
+    "homeassistant.util.unit_system": [
+        ObsoleteImportMatch(
+            reason="replaced by US_CUSTOMARY_SYSTEM",
+            constant=re.compile(r"^IMPERIAL_SYSTEM$"),
+        ),
+    ],
 }