diff --git a/roomserver/internal/input/input_membership.go b/roomserver/internal/input/input_membership.go
index ff3ed7e5d..3953586b2 100644
--- a/roomserver/internal/input/input_membership.go
+++ b/roomserver/internal/input/input_membership.go
@@ -48,7 +48,7 @@ func (r *Inputer) updateMemberships(
 	// Load the event JSON so we can look up the "membership" key.
 	// TODO: Maybe add a membership key to the events table so we can load that
 	// key without having to load the entire event JSON?
-	events, err := r.DB.Events(ctx, eventNIDs)
+	events, err := updater.Events(ctx, eventNIDs)
 	if err != nil {
 		return nil, err
 	}