diff --git a/custom_components/ramses_cc/schemas.py b/custom_components/ramses_cc/schemas.py
index fb101b6..fd2ec43 100644
--- a/custom_components/ramses_cc/schemas.py
+++ b/custom_components/ramses_cc/schemas.py
@@ -232,7 +232,7 @@ def schema_is_minimal(schema: _SchemaT) -> bool:
 SCH_SEND_PACKET = vol.Schema(
     {
         vol.Required(ATTR_DEVICE_ID): _SCH_DEVICE_ID,
-        Vol.Optional("from_id"): _SCH_DEVICE_ID,
+        vol.Optional("from_id"): _SCH_DEVICE_ID,
         vol.Required("verb"): vol.In((" I", "I", "RQ", "RP", " W", "W")),
         vol.Required("code"): cv.matches_regex(r"^[0-9A-F]{4}$"),
         vol.Required("payload"): cv.matches_regex(r"^([0-9A-F][0-9A-F]){1,48}$"),