diff --git a/content/client-server-api/modules/account_data.md b/content/client-server-api/modules/account_data.md
index ef16eb57..82445be3 100644
--- a/content/client-server-api/modules/account_data.md
+++ b/content/client-server-api/modules/account_data.md
@@ -10,6 +10,7 @@ and can persist across installations on a particular device. Users may
 only view the account data for their own account.
 
 The account data may be either global or scoped to a particular room.
+There is no inheritance mechanism here: a given `type` of data missing from a room's account data does not fall back to the global account data with the same `type`.
 
 #### Events