diff --git a/CHANGELOG.md b/CHANGELOG.md
index 3db115d58..0b17a1c82 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,6 +1,7 @@
 # Changelog Fab Manager
 
 ## next release (v2.5.0)
+- Ability to remove an unused custom price for an event (#61)
 - Prevent polling notifications when the application is in background
 - Ability to export the availabilities and their reservation rate from the admin calendar
 - Ability to create, manage and reserve spaces
diff --git a/app/assets/javascripts/controllers/admin/events.coffee.erb b/app/assets/javascripts/controllers/admin/events.coffee.erb
index 9ef91e1c5..728a58cbb 100644
--- a/app/assets/javascripts/controllers/admin/events.coffee.erb
+++ b/app/assets/javascripts/controllers/admin/events.coffee.erb
@@ -16,6 +16,8 @@
 #  - $scope.toggleStartDatePicker($event)
 #  - $scope.toggleEndDatePicker($event)
 #  - $scope.toggleRecurrenceEnd(e)
+#  - $scope.addPrice()
+#  - $scope.removePrice(price, $event)
 #
 # Requires :
 #  - $scope.event.event_files_attributes = []
@@ -137,6 +139,21 @@ class EventsController
 
 
 
+    ##
+    # Remove the price or mark it as 'to delete'
+    ##
+    $scope.removePrice = (price, event) ->
+      event.preventDefault()
+      event.stopPropagation()
+      if price.id
+        price._destroy = true
+      else
+        index = $scope.event.prices.indexOf(price)
+        $scope.event.prices.splice(index, 1)
+
+
+
+
 ##
 # Controller used in the events listing page (admin view)
 ##
diff --git a/app/assets/templates/events/_form.html.erb b/app/assets/templates/events/_form.html.erb
index b146fffac..b99fbf639 100644
--- a/app/assets/templates/events/_form.html.erb
+++ b/app/assets/templates/events/_form.html.erb
@@ -246,7 +246,7 @@
              <span class="help-block" translate>{{ '0_=_free' }}</span>
           </div>
         </div>
-        <div class="form-group" ng-repeat="price in event.prices">
+        <div class="form-group" ng-repeat="price in event.prices" ng-show="!price._destroy">
           <div class="col-sm-5">
             <input type="hidden" name="event[event_price_categories_attributes][][id]" ng-value="price.id">
             <select class="form-control"
@@ -264,6 +264,10 @@
               <div class="input-group-addon">{{currencySymbol}}</div>
             </div>
           </div>
+          <div class="col-sm-1">
+            <input type="hidden" name="event[event_price_categories_attributes][][_destroy]" ng-value="price._destroy">
+            <a class="btn" ng-click="removePrice(price, $event)" href="#"><i class="fa fa-times text-danger"></i></a>
+          </div>
         </div>
         <div class="link-icon m-b" ng-hide="event.prices.length == priceCategories.length">
           <div class="col-sm-offset-5">
diff --git a/app/controllers/api/events_controller.rb b/app/controllers/api/events_controller.rb
index ef4144d6f..7ce75a376 100644
--- a/app/controllers/api/events_controller.rb
+++ b/app/controllers/api/events_controller.rb
@@ -12,7 +12,6 @@ class API::EventsController < API::ApiController
 
     # paginate
     @events = @events.page(@page).per(12)
-
   end
 
   # GET /events/upcoming/:limit
@@ -38,11 +37,20 @@ class API::EventsController < API::ApiController
 
   def update
     authorize Event
-    if @event.update(event_params.permit!)
-      render :show, status: :ok, location: @event
-    else
-      render json: @event.errors, status: :unprocessable_entity
+    begin
+      if @event.update(event_params.permit!)
+        render :show, status: :ok, location: @event
+      else
+        render json: @event.errors, status: :unprocessable_entity
+      end
+    rescue ActiveRecord::RecordNotDestroyed => e
+      if e.record.class.name == 'EventPriceCategory'
+        render json: {error: ["#{e.record.price_category.name}: #{t('events.error_deleting_reserved_price')}"]}, status: :unprocessable_entity
+      else
+        render json: {error: [t('events.other_error')]}, status: :unprocessable_entity
+      end
     end
+
   end
 
   def destroy
@@ -69,7 +77,7 @@ class API::EventsController < API::ApiController
                                                     :age_range_id, event_theme_ids: [],
                                                     event_image_attributes: [:attachment],
                                                     event_files_attributes: [:id, :attachment, :_destroy],
-                                                    event_price_categories_attributes: [:id, :price_category_id, :amount]
+                                                    event_price_categories_attributes: [:id, :price_category_id, :amount, :_destroy]
       )
       # handle dates & times (whole-day events or not, maybe during many days)
       start_date = Time.zone.parse(event_preparams[:start_date])
diff --git a/app/models/event.rb b/app/models/event.rb
index 9ddfd617d..4c9e28395 100644
--- a/app/models/event.rb
+++ b/app/models/event.rb
@@ -12,7 +12,7 @@ class Event < ActiveRecord::Base
 
   has_many :event_price_categories, dependent: :destroy
   has_many :price_categories, through: :event_price_categories
-  accepts_nested_attributes_for :event_price_categories, allow_destroy: false
+  accepts_nested_attributes_for :event_price_categories, allow_destroy: true
 
   belongs_to :age_range
 
diff --git a/app/models/event_price_category.rb b/app/models/event_price_category.rb
index 843418d87..623c4013f 100644
--- a/app/models/event_price_category.rb
+++ b/app/models/event_price_category.rb
@@ -6,4 +6,12 @@ class EventPriceCategory < ActiveRecord::Base
 
   validates :price_category_id, presence: true
   validates :amount, presence: true
+
+  before_destroy :verify_no_associated_tickets
+
+  protected
+  def verify_no_associated_tickets
+    tickets.count == 0
+  end
+
 end
diff --git a/config/locales/en.yml b/config/locales/en.yml
index 69950ff3d..910fc6d6e 100644
--- a/config/locales/en.yml
+++ b/config/locales/en.yml
@@ -124,6 +124,11 @@ en:
     i_ve_reserved: "I've reserved"
     completed: "Full"
 
+  events:
+    # error messages when updating an event
+    error_deleting_reserved_price: "Unable to delete the requested price because it is associated with some reservations"
+    other_error: "An unexpected error occurred while updating the event"
+
   export_members:
     # members list export to EXCEL format
     members: "Members"
diff --git a/config/locales/fr.yml b/config/locales/fr.yml
index 2455e3775..2efae5864 100644
--- a/config/locales/fr.yml
+++ b/config/locales/fr.yml
@@ -124,6 +124,11 @@ fr:
     i_ve_reserved: "J'ai réservé"
     completed: "Complet"
 
+  events:
+    # messages d'erreur lors de la mise à jour d'un évènement
+    error_deleting_reserved_price: "Impossible de supprimer le tarif demandé car il est associé à des réservations"
+    other_error: "Une erreur inattendue est survenue lors de la mise à jour de l'évènement"
+
   export_members:
     # export de la liste des members au format EXCEL
     members: "Membres"