diff --git a/CHANGELOG.md b/CHANGELOG.md
index e0b957c36..950cd8961 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -3,6 +3,7 @@
 - Updated shakapaker to 6.5.5
 - Fix a bug: unable to create a recurrent event
 - Fix a bug: unable to create a non-rolling plan
+- Fix a bug: invalid duration for machine/spaces reservations in statistics, when using slots of not 1 hour
 - Fix a bug: invalid month in date format
 - Fix a bug: do not show theme and age-range fields in event form if no options were set
 - Fix a bug: do not show catgory select in plan form if no options were set
diff --git a/app/controllers/api/trainings_controller.rb b/app/controllers/api/trainings_controller.rb
index 81b711ab3..a38ecd984 100644
--- a/app/controllers/api/trainings_controller.rb
+++ b/app/controllers/api/trainings_controller.rb
@@ -48,6 +48,7 @@ class API::TrainingsController < API::ApiController
     head :no_content
   end
 
+  # This endpoint is used to get a list of trainings to validate
   def availabilities
     authorize Training
     @training = Training.find(params[:id])
diff --git a/app/frontend/src/javascript/controllers/admin/statistics.js b/app/frontend/src/javascript/controllers/admin/statistics.js
index bce3a669a..1676fd93c 100644
--- a/app/frontend/src/javascript/controllers/admin/statistics.js
+++ b/app/frontend/src/javascript/controllers/admin/statistics.js
@@ -647,7 +647,7 @@ Application.Controllers.controller('StatisticsController', ['$scope', '$state',
         }
       }
 
-      return angular.forEach($scope.selectedIndex.additional_fields, function (field) {
+      angular.forEach($scope.selectedIndex.additional_fields, function (field) {
         const filter = { key: field.key, label: field.label, values: [] };
         switch (field.data_type) {
           case 'index': filter.values.push('input_number'); break;
diff --git a/app/models/stats/machine.rb b/app/models/stats/machine.rb
index 96aa3bd8b..e1c95d182 100644
--- a/app/models/stats/machine.rb
+++ b/app/models/stats/machine.rb
@@ -7,4 +7,5 @@ class Stats::Machine
   include StatReservationConcern
 
   attribute :machineId, Integer
+  attribute :machineDates, Array
 end
diff --git a/app/models/stats/space.rb b/app/models/stats/space.rb
index 62b1e6aa7..2146267da 100644
--- a/app/models/stats/space.rb
+++ b/app/models/stats/space.rb
@@ -7,4 +7,5 @@ class Stats::Space
   include StatReservationConcern
 
   attribute :spaceId, Integer
+  attribute :spaceDates, Array
 end
diff --git a/app/services/statistics/builders/reservations_builder_service.rb b/app/services/statistics/builders/reservations_builder_service.rb
index 6c6bea826..e8b4020fc 100644
--- a/app/services/statistics/builders/reservations_builder_service.rb
+++ b/app/services/statistics/builders/reservations_builder_service.rb
@@ -30,6 +30,8 @@ class Statistics::Builders::ReservationsBuilderService
 
     def add_custom_attributes(category, stat, reservation_data)
       stat = add_event_attributes(category, stat, reservation_data)
+      stat = add_machine_attributes(category, stat, reservation_data)
+      stat = add_space_attributes(category, stat, reservation_data)
       add_training_attributes(category, stat, reservation_data)
     end
 
@@ -50,5 +52,21 @@ class Statistics::Builders::ReservationsBuilderService
 
       stat
     end
+
+    def add_machine_attributes(category, stat, reservation_data)
+      return stat unless category == 'machine'
+
+      stat[:machineDates] = reservation_data[:slot_dates]
+
+      stat
+    end
+
+    def add_space_attributes(category, stat, reservation_data)
+      return stat unless category == 'space'
+
+      stat[:spaceDates] = reservation_data[:slot_dates]
+
+      stat
+    end
   end
 end
diff --git a/app/services/statistics/concerns/helpers_concern.rb b/app/services/statistics/concerns/helpers_concern.rb
index e07b8c441..d851a4eb2 100644
--- a/app/services/statistics/concerns/helpers_concern.rb
+++ b/app/services/statistics/concerns/helpers_concern.rb
@@ -39,7 +39,7 @@ module Statistics::Concerns::HelpersConcern
 
     def difference_in_hours(start_at, end_at)
       if start_at.to_date == end_at.to_date
-        ((end_at - start_at) / 60 / 60).to_i
+        ((end_at - start_at) / 3600.0).to_i
       else
         end_at_to_start_date = end_at.change(year: start_at.year, month: start_at.month, day: start_at.day)
         hours = ((end_at_to_start_date - start_at) / 60 / 60).to_i
diff --git a/app/services/statistics/fetcher_service.rb b/app/services/statistics/fetcher_service.rb
index 9838a343b..26c1fbbc5 100644
--- a/app/services/statistics/fetcher_service.rb
+++ b/app/services/statistics/fetcher_service.rb
@@ -54,7 +54,8 @@ class Statistics::FetcherService
                       machine_id: r.reservable.id,
                       machine_type: r.reservable.friendly_id,
                       machine_name: r.reservable.name,
-                      nb_hours: r.slots.size,
+                      slot_dates: r.slots.map(&:start_at).map(&:to_date),
+                      nb_hours: (r.slots.map(&:duration).map(&:to_i).reduce(:+) / 3600.0).to_i,
                       ca: calcul_ca(r.original_invoice) }.merge(user_info(profile)))
       end
       result
@@ -75,7 +76,8 @@ class Statistics::FetcherService
                       space_id: r.reservable.id,
                       space_name: r.reservable.name,
                       space_type: r.reservable.slug,
-                      nb_hours: r.slots.size,
+                      slot_dates: r.slots.map(&:start_at).map(&:to_date),
+                      nb_hours: (r.slots.map(&:duration).map(&:to_i).reduce(:+) / 3600.0).to_i,
                       ca: calcul_ca(r.original_invoice) }.merge(user_info(profile)))
       end
       result
diff --git a/app/views/api/statistics/index.json.jbuilder b/app/views/api/statistics/index.json.jbuilder
index d0f638d66..7a3371a1c 100644
--- a/app/views/api/statistics/index.json.jbuilder
+++ b/app/views/api/statistics/index.json.jbuilder
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 json.array!(@statistics) do |s|
   json.extract! s, :id, :es_type_key, :label, :table, :ca
   json.additional_fields s.statistic_fields do |f|
@@ -12,8 +14,10 @@ json.array!(@statistics) do |s|
       json.extract! st, :id, :key, :label
     end
   end
-  json.graph do
-    json.chart_type s.statistic_graph.chart_type
-    json.limit s.statistic_graph.limit
-  end if s.statistic_graph
-end
\ No newline at end of file
+  if s.statistic_graph
+    json.graph do
+      json.chart_type s.statistic_graph.chart_type
+      json.limit s.statistic_graph.limit
+    end
+  end
+end
diff --git a/config/locales/en.yml b/config/locales/en.yml
index 27d4cd98c..f0c89e4a4 100644
--- a/config/locales/en.yml
+++ b/config/locales/en.yml
@@ -435,6 +435,8 @@ en:
   statistics:
     subscriptions: "Subscriptions"
     machines_hours: "Machines slots"
+    machine_dates: "Slots dates"
+    space_dates: "Slots dates"
     spaces: "Spaces"
     orders: "Orders"
     trainings: "Trainings"
diff --git a/test/services/statistics/reservation_subscription_statistic_service_test.rb b/test/services/statistics/reservation_subscription_statistic_service_test.rb
index e998f3a19..72f7f58b5 100644
--- a/test/services/statistics/reservation_subscription_statistic_service_test.rb
+++ b/test/services/statistics/reservation_subscription_statistic_service_test.rb
@@ -16,7 +16,7 @@ class ReservationSubscriptionStatisticServiceTest < ActionDispatch::IntegrationT
   test 'build stats' do
     # Create a reservation to generate an invoice (2 days ago)
     machine = Machine.find(1)
-    slot = Availability.find(19).slots.first
+    machine_slot = Availability.find(19).slots.first
     travel_to(2.days.ago)
     post '/api/local_payment/confirm_payment', params: {
       customer_id: @user.id,
@@ -27,7 +27,7 @@ class ReservationSubscriptionStatisticServiceTest < ActionDispatch::IntegrationT
             reservable_type: machine.class.name,
             slots_reservations_attributes: [
               {
-                slot_id: slot.id
+                slot_id: machine_slot.id
               }
             ]
           }
@@ -72,8 +72,8 @@ class ReservationSubscriptionStatisticServiceTest < ActionDispatch::IntegrationT
     }.to_json, headers: default_headers
     travel_back
 
-    # Crate another machine reservation (today)
-    slot = Availability.find(19).slots.last
+    # Create another machine reservation (today)
+    machine_slot2 = Availability.find(19).slots.last
     post '/api/local_payment/confirm_payment', params: {
       customer_id: @user.id,
       items: [
@@ -83,7 +83,7 @@ class ReservationSubscriptionStatisticServiceTest < ActionDispatch::IntegrationT
             reservable_type: machine.class.name,
             slots_reservations_attributes: [
               {
-                slot_id: slot.id
+                slot_id: machine_slot2.id
               }
             ]
           }
@@ -106,6 +106,7 @@ class ReservationSubscriptionStatisticServiceTest < ActionDispatch::IntegrationT
                                                                  { term: { type: 'booking' } }] } }).first
     assert_not_nil stat_booking
     assert_equal machine.friendly_id, stat_booking['subType']
+    assert_equal 1, stat_booking['stat']
     check_statistics_on_user(stat_booking)
 
     stat_hour = Stats::Machine.search(query: { bool: { must: [{ term: { date: 2.days.ago.to_date.iso8601 } },
@@ -113,6 +114,8 @@ class ReservationSubscriptionStatisticServiceTest < ActionDispatch::IntegrationT
 
     assert_not_nil stat_hour
     assert_equal machine.friendly_id, stat_hour['subType']
+    assert_equal (machine_slot.duration.to_i / 3600.0).to_i, stat_hour['stat']
+    assert_includes stat_hour['machineDates'], machine_slot.start_at.to_date.iso8601
     check_statistics_on_user(stat_hour)
 
     # second machine reservation (today)
@@ -120,6 +123,7 @@ class ReservationSubscriptionStatisticServiceTest < ActionDispatch::IntegrationT
                                                                  { term: { type: 'booking' } }] } }).first
     assert_not_nil stat_booking
     assert_equal machine.friendly_id, stat_booking['subType']
+    assert_equal 1, stat_booking['stat']
     check_statistics_on_user(stat_booking)
 
     stat_hour = Stats::Machine.search(query: { bool: { must: [{ term: { date: DateTime.current.to_date.iso8601 } },
@@ -127,6 +131,8 @@ class ReservationSubscriptionStatisticServiceTest < ActionDispatch::IntegrationT
 
     assert_not_nil stat_hour
     assert_equal machine.friendly_id, stat_hour['subType']
+    assert_equal (machine_slot2.duration.to_i / 3600.0).to_i, stat_hour['stat']
+    assert_includes stat_hour['machineDates'], machine_slot2.start_at.to_date.iso8601
     check_statistics_on_user(stat_hour)
 
     # training
@@ -136,6 +142,7 @@ class ReservationSubscriptionStatisticServiceTest < ActionDispatch::IntegrationT
                                                                    { term: { type: 'booking' } }] } }).first
     assert_not_nil stat_training
     assert_equal training.friendly_id, stat_training['subType']
+    assert_equal tr_slot.start_at.to_date.iso8601, stat_training['trainingDate']
     check_statistics_on_user(stat_training)
 
     # subscription