diff --git a/homeassistant/components/notion/const.py b/homeassistant/components/notion/const.py
index 2f81cb72ac0..6ce5c4e5bc7 100644
--- a/homeassistant/components/notion/const.py
+++ b/homeassistant/components/notion/const.py
@@ -7,7 +7,7 @@ DEFAULT_SCAN_INTERVAL = timedelta(minutes=1)
 
 DATA_CLIENT = "client"
 
-TOPIC_DATA_UPDATE = "data_update"
+TOPIC_DATA_UPDATE = f"{DOMAIN}_data_update"
 
 TYPE_BINARY_SENSOR = "binary_sensor"
 TYPE_SENSOR = "sensor"