diff --git a/CHANGELOG.md b/CHANGELOG.md
index 5dc222f5a..df271d8b4 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,7 +1,9 @@
 # Changelog Fab-manager
 
+- Fix a bug: unable to show the daily view of the public agenda, if it contains trainings or events
+
 ## v5.4.19 2022 September 13
-- Fix a bug: comput the wallet amount that can't apply coupon
+- Fix a bug: computing the wallet amount to debit ignores the applied coupon
 
 ## v5.4.18 2022 September 12
 
diff --git a/app/views/api/availabilities/public.json.jbuilder b/app/views/api/availabilities/public.json.jbuilder
index 7add5228c..9720b430d 100644
--- a/app/views/api/availabilities/public.json.jbuilder
+++ b/app/views/api/availabilities/public.json.jbuilder
@@ -49,10 +49,10 @@ json.array!(@availabilities) do |availability|
       json.borderColor space_slot_border_color(availability)
     when 'training'
       json.training_id availability.availability.trainings.first.id
-      json.borderColor trainings_events_border_color(availability)
+      json.borderColor trainings_events_border_color(availability.availability)
     when 'event'
       json.event_id availability.availability.event.id
-      json.borderColor trainings_events_border_color(availability)
+      json.borderColor trainings_events_border_color(availability.availability)
     else
       json.title 'Unknown slot'
     end