diff --git a/4.2.-op-request=booking_update.md b/4.2.-op-request=booking_update.md
index 7a432a1..56c69a2 100644
--- a/4.2.-op-request=booking_update.md
+++ b/4.2.-op-request=booking_update.md
@@ -6,7 +6,7 @@ The following booking states are implemented:
 
 `state=canceled` booking request will be canceled. The bike is set to `state=available` in the COPRI backend.
 
-`state=occupied` bike rental starts. `state=occupied` marks the start of the rental in copri. A multiple "occupied" will be acknowledged with an error, because a rental can only be started once. So that the rental start is recorded in any case in the backend, please set the `state=occupied` in the first request.
+`state=occupied` bike rental starts. `state=occupied` marks the start of the rental in copri. A multiple "occupied" will be acknowledged with an error, because a rental can only be started once. So that the rental start is recorded in any case in the backend, please set the `state=occupied` in the request before the smartlock will be unlocked.
 
 `state=available` end the bike rental, which makes the bike `state=available` again in the COPRI backend.