diff --git a/homeassistant/components/automation/event.py b/homeassistant/components/automation/event.py
index 20ea556f450178abc62ce65ea4991ffcb3d2202b..7c035d7d1a5f7bee26cd8c24ca63b2dc94b1b068 100644
--- a/homeassistant/components/automation/event.py
+++ b/homeassistant/components/automation/event.py
@@ -31,7 +31,7 @@ def async_trigger(hass, config, action):
     event_type = config.get(CONF_EVENT_TYPE)
     event_data_schema = vol.Schema(
         config.get(CONF_EVENT_DATA),
-        extra=vol.ALLOW_EXTRA) if CONF_EVENT_DATA in config else None
+        extra=vol.ALLOW_EXTRA) if config.get(CONF_EVENT_DATA) else None
 
     @callback
     def handle_event(event):