diff --git a/homeassistant/components/device_tracker/legacy.py b/homeassistant/components/device_tracker/legacy.py
index 8216c5fba27..09fd5dce432 100644
--- a/homeassistant/components/device_tracker/legacy.py
+++ b/homeassistant/components/device_tracker/legacy.py
@@ -71,12 +71,7 @@ from .const import (
 
 SERVICE_SEE: Final = "see"
 
-SOURCE_TYPES: Final[tuple[str, ...]] = (
-    SourceType.GPS,
-    SourceType.ROUTER,
-    SourceType.BLUETOOTH,
-    SourceType.BLUETOOTH_LE,
-)
+SOURCE_TYPES = [cls.value for cls in SourceType]
 
 NEW_DEVICE_DEFAULTS_SCHEMA = vol.Any(
     None,
@@ -108,7 +103,7 @@ SERVICE_SEE_PAYLOAD_SCHEMA: Final[vol.Schema] = vol.Schema(
             ATTR_GPS_ACCURACY: cv.positive_int,
             ATTR_BATTERY: cv.positive_int,
             ATTR_ATTRIBUTES: dict,
-            ATTR_SOURCE_TYPE: vol.In(SOURCE_TYPES),
+            ATTR_SOURCE_TYPE: vol.Coerce(SourceType),
             ATTR_CONSIDER_HOME: cv.time_period,
             # Temp workaround for iOS app introduced in 0.65
             vol.Optional("battery_status"): str,