diff --git a/app/assets/javascripts/controllers/events.coffee.erb b/app/assets/javascripts/controllers/events.coffee.erb
index 399cb8983..e64229556 100644
--- a/app/assets/javascripts/controllers/events.coffee.erb
+++ b/app/assets/javascripts/controllers/events.coffee.erb
@@ -358,11 +358,14 @@ Application.Controllers.controller "ShowEventController", ["$scope", "$state", "
           $uibModalInstance.dismiss('cancel')
       ]
     .result['finally'](null).then (reservation)->
+      # remove the reservation from the user's reservations list for this event (occurrence)
       $scope.reservations.splice(index, 1)
-      $scope.event.nb_free_places = $scope.event.nb_free_places + reservation.nb_reserve_places + reservation.nb_reserve_reduced_places
+      # add the number of places transfered (to the new date) to the total of free places for this event
+      $scope.event.nb_free_places = $scope.event.nb_free_places + reservation.total_booked_seats
+      # remove the number of places transfered from the total of free places of the receiving occurrance
       angular.forEach $scope.event.recurrence_events, (e)->
-        if e.id is parseInt(reservation.reservable_id, 10)
-          e.nb_free_places = e.nb_free_places - reservation.nb_reserve_places - reservation.nb_reserve_reduced_places
+        if e.id is parseInt(reservation.reservable.id, 10)
+          e.nb_free_places = e.nb_free_places - reservation.total_booked_seats
 
 
 
diff --git a/app/assets/javascripts/router.coffee.erb b/app/assets/javascripts/router.coffee.erb
index 770c5fa9b..921fb4fab 100644
--- a/app/assets/javascripts/router.coffee.erb
+++ b/app/assets/javascripts/router.coffee.erb
@@ -512,9 +512,6 @@ angular.module('application.router', ['ui.router']).
           eventPromise: ['Event', '$stateParams', (Event, $stateParams)->
             Event.get(id: $stateParams.id).$promise
           ]
-          reducedAmountAlert: ['Setting', (Setting)->
-            Setting.get(name: 'event_reduced_amount_alert').$promise
-          ]
           priceCategoriesPromise: ['PriceCategory', (PriceCategory) ->
             PriceCategory.query().$promise
           ]
diff --git a/app/views/api/reservations/show.json.jbuilder b/app/views/api/reservations/show.json.jbuilder
index 1f36016a5..cf62a5a88 100644
--- a/app/views/api/reservations/show.json.jbuilder
+++ b/app/views/api/reservations/show.json.jbuilder
@@ -34,4 +34,5 @@ json.tickets @reservation.tickets do |t|
     end
   end
 end
+json.total_booked_seats @reservation.total_booked_seats
 json.created_at @reservation.created_at.iso8601