diff --git a/4.2.-op-request=booking_update.md b/4.2.-op-request=booking_update.md
index 471769d..cf860ff 100644
--- a/4.2.-op-request=booking_update.md
+++ b/4.2.-op-request=booking_update.md
@@ -8,8 +8,9 @@ The following booking states are implemented:
 `state=available` end the bike rental, which makes the bike `state=available` again in the COPRI backend.
 
 The following lock states are implemented:
+`lock_state=unlocking` start unlocking signal, smartlock was triggered to unlock.
 `lock_state=unlocked` successfully unlocking the lock.
-`lock_state=locking` end rent signal, smartlock was triggered to close. 
+`lock_state=locking` start locking signal, smartlock was triggered to close. 
 `lock_state=locked` closed successfully.
 
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