diff --git a/config/locales/app.admin.no.yml b/config/locales/app.admin.no.yml
index 417d9c6e3..993f0cdbc 100644
--- a/config/locales/app.admin.no.yml
+++ b/config/locales/app.admin.no.yml
@@ -98,7 +98,8 @@
         delete_this_slot: "Bare denne tidsluken"
         delete_this_and_next: "Denne og følgende tidsluker"
         delete_all: "Alle tidsluker"
-        event_in_the_past: "Ikke mulig å lage tidsluke i fortid."
+        event_in_the_past: "Create a slot in the past"
+        confirm_create_event_in_the_past: "You are about to create a slot in the past. Are you sure you want to do this? Members will not be able to book this slot."
         edit_event: "Rediger arrangementet"
         view_reservations: "Vis reservasjoner"
         legend: "Forklaring"