diff --git a/homeassistant/helpers/config_validation.py b/homeassistant/helpers/config_validation.py
index 129649e3ba3ac3..98a2cd719314a0 100644
--- a/homeassistant/helpers/config_validation.py
+++ b/homeassistant/helpers/config_validation.py
@@ -1791,7 +1791,7 @@ def _trigger_pre_validator(value: Any | None) -> Any:
         value = dict(value)
         value[CONF_PLATFORM] = value.pop(CONF_TRIGGER)
     elif CONF_PLATFORM not in value:
-        raise vol.Invalid("required key not provided", ["trigger"])
+        raise vol.Invalid("required key not provided", [CONF_TRIGGER])
 
     return value