diff --git a/Gemfile b/Gemfile
index 04bdd6a96..d10c643df 100644
--- a/Gemfile
+++ b/Gemfile
@@ -61,6 +61,7 @@ group :test do
   gem 'pdf-reader'
   gem 'vcr', '3.0.1'
   gem 'webmock'
+  gem 'rubyXL'
 end
 
 group :production, :staging do
diff --git a/Gemfile.lock b/Gemfile.lock
index 71529414b..0fbd391c4 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -366,6 +366,9 @@ GEM
     ruby-rc4 (0.1.5)
     ruby-vips (2.0.17)
       ffi (~> 1.9)
+    rubyXL (3.4.14)
+      nokogiri (>= 1.10.8)
+      rubyzip (>= 1.3.0)
     rubyzip (1.3.0)
     safe_yaml (1.0.5)
     sass (3.4.25)
@@ -518,6 +521,7 @@ DEPENDENCIES
   responders (~> 2.0)
   rolify
   rubocop (~> 0.61.1)
+  rubyXL
   rubyzip (>= 1.3.0)
   sass-rails (~> 5.0, >= 5.0.6)
   sdoc (~> 0.4.0)
diff --git a/db/structure.sql b/db/structure.sql
index d94aa5d6e..6ca27d22d 100644
--- a/db/structure.sql
+++ b/db/structure.sql
@@ -108,8 +108,8 @@ SET default_tablespace = '';
 
 CREATE TABLE public.abuses (
     id integer NOT NULL,
-    signaled_id integer,
     signaled_type character varying,
+    signaled_id integer,
     first_name character varying,
     last_name character varying,
     email character varying,
@@ -187,8 +187,8 @@ CREATE TABLE public.addresses (
     locality character varying,
     country character varying,
     postal_code character varying,
-    placeable_id integer,
     placeable_type character varying,
+    placeable_id integer,
     created_at timestamp without time zone,
     updated_at timestamp without time zone
 );
@@ -263,8 +263,8 @@ CREATE TABLE public.ar_internal_metadata (
 
 CREATE TABLE public.assets (
     id integer NOT NULL,
-    viewable_id integer,
     viewable_type character varying,
+    viewable_id integer,
     attachment character varying,
     type character varying,
     created_at timestamp without time zone,
@@ -504,8 +504,8 @@ ALTER SEQUENCE public.coupons_id_seq OWNED BY public.coupons.id;
 
 CREATE TABLE public.credits (
     id integer NOT NULL,
-    creditable_id integer,
     creditable_type character varying,
+    creditable_id integer,
     plan_id integer,
     hours integer,
     created_at timestamp without time zone,
@@ -1046,8 +1046,8 @@ ALTER SEQUENCE public.invoice_items_id_seq OWNED BY public.invoice_items.id;
 
 CREATE TABLE public.invoices (
     id integer NOT NULL,
-    invoiced_id integer,
     invoiced_type character varying,
+    invoiced_id integer,
     stp_invoice_id character varying,
     total integer,
     created_at timestamp without time zone,
@@ -1226,15 +1226,15 @@ ALTER SEQUENCE public.machines_id_seq OWNED BY public.machines.id;
 CREATE TABLE public.notifications (
     id integer NOT NULL,
     receiver_id integer,
-    attached_object_id integer,
     attached_object_type character varying,
+    attached_object_id integer,
     notification_type_id integer,
     is_read boolean DEFAULT false,
     created_at timestamp without time zone,
     updated_at timestamp without time zone,
     receiver_type character varying,
     is_send boolean DEFAULT false,
-    meta_data jsonb DEFAULT '{}'::jsonb
+    meta_data jsonb DEFAULT '"{}"'::jsonb
 );
 
 
@@ -1575,8 +1575,8 @@ CREATE TABLE public.prices (
     id integer NOT NULL,
     group_id integer,
     plan_id integer,
-    priceable_id integer,
     priceable_type character varying,
+    priceable_id integer,
     amount integer,
     created_at timestamp without time zone NOT NULL,
     updated_at timestamp without time zone NOT NULL
@@ -1891,8 +1891,8 @@ CREATE TABLE public.reservations (
     message text,
     created_at timestamp without time zone,
     updated_at timestamp without time zone,
-    reservable_id integer,
     reservable_type character varying,
+    reservable_id integer,
     nb_reserve_places integer,
     statistic_profile_id integer
 );
@@ -1924,8 +1924,8 @@ ALTER SEQUENCE public.reservations_id_seq OWNED BY public.reservations.id;
 CREATE TABLE public.roles (
     id integer NOT NULL,
     name character varying,
-    resource_id integer,
     resource_type character varying,
+    resource_id integer,
     created_at timestamp without time zone,
     updated_at timestamp without time zone
 );
@@ -2859,8 +2859,8 @@ CREATE TABLE public.users_roles (
 CREATE TABLE public.wallet_transactions (
     id integer NOT NULL,
     wallet_id integer,
-    transactable_id integer,
     transactable_type character varying,
+    transactable_id integer,
     transaction_type character varying,
     amount integer,
     created_at timestamp without time zone NOT NULL,
@@ -3919,6 +3919,14 @@ ALTER TABLE ONLY public.roles
     ADD CONSTRAINT roles_pkey PRIMARY KEY (id);
 
 
+--
+-- Name: schema_migrations schema_migrations_pkey; Type: CONSTRAINT; Schema: public; Owner: -
+--
+
+ALTER TABLE ONLY public.schema_migrations
+    ADD CONSTRAINT schema_migrations_pkey PRIMARY KEY (version);
+
+
 --
 -- Name: settings settings_pkey; Type: CONSTRAINT; Schema: public; Owner: -
 --
@@ -4934,29 +4942,6 @@ CREATE INDEX profiles_lower_unaccent_last_name_trgm_idx ON public.profiles USING
 CREATE INDEX projects_search_vector_idx ON public.projects USING gin (search_vector);
 
 
---
--- Name: unique_schema_migrations; Type: INDEX; Schema: public; Owner: -
---
-
-CREATE UNIQUE INDEX unique_schema_migrations ON public.schema_migrations USING btree (version);
-
-
---
--- Name: accounting_periods accounting_periods_del_protect; Type: RULE; Schema: public; Owner: -
---
-
-CREATE RULE accounting_periods_del_protect AS
-    ON DELETE TO public.accounting_periods DO INSTEAD NOTHING;
-
-
---
--- Name: accounting_periods accounting_periods_upd_protect; Type: RULE; Schema: public; Owner: -
---
-
-CREATE RULE accounting_periods_upd_protect AS
-    ON UPDATE TO public.accounting_periods DO INSTEAD NOTHING;
-
-
 --
 -- Name: projects projects_search_content_trigger; Type: TRIGGER; Schema: public; Owner: -
 --
@@ -5443,7 +5428,6 @@ INSERT INTO "schema_migrations" (version) VALUES
 ('20140605125131'),
 ('20140605142133'),
 ('20140605151442'),
-('20140606133116'),
 ('20140609092700'),
 ('20140609092827'),
 ('20140610153123'),
@@ -5512,14 +5496,12 @@ INSERT INTO "schema_migrations" (version) VALUES
 ('20150507075620'),
 ('20150512123546'),
 ('20150520132030'),
-('20150520133409'),
 ('20150526130729'),
 ('20150527153312'),
 ('20150529113555'),
 ('20150601125944'),
 ('20150603104502'),
 ('20150603104658'),
-('20150603133050'),
 ('20150604081757'),
 ('20150604131525'),
 ('20150608142234'),
@@ -5601,7 +5583,6 @@ INSERT INTO "schema_migrations" (version) VALUES
 ('20160905142700'),
 ('20160906094739'),
 ('20160906094847'),
-('20160906145713'),
 ('20160915105234'),
 ('20161123104604'),
 ('20170109085345'),
diff --git a/test/fixtures/trainings_availabilities.yml b/test/fixtures/trainings_availabilities.yml
index 0f2b65ec7..0827e52de 100644
--- a/test/fixtures/trainings_availabilities.yml
+++ b/test/fixtures/trainings_availabilities.yml
@@ -19,3 +19,10 @@ trainings_availability_3:
   availability_id: 8
   created_at: 2016-04-04 15:26:49.574308000 Z
   updated_at: 2016-04-04 15:26:49.574308000 Z
+
+trainings_availability_4:
+  id: 4
+  training_id: 3
+  availability_id: 12
+  created_at: 2020-07-22 10:09:41.841162000 Z
+  updated_at: 2020-07-22 10:09:41.841162000 Z
diff --git a/test/integration/exports/accounting_export_test.rb b/test/integration/exports/accounting_export_test.rb
index dfc308b45..29a3c6632 100644
--- a/test/integration/exports/accounting_export_test.rb
+++ b/test/integration/exports/accounting_export_test.rb
@@ -8,7 +8,7 @@ class Exports::AccountingExportTest < ActionDispatch::IntegrationTest
     login_as(admin, scope: :user)
   end
 
-  test 'creation modification reservation and re-modification scenario' do
+  test 'export accounting period to ACD software' do
     # First, we create a new export
     post '/api/accounting/export',
          params: {
diff --git a/test/integration/exports/availabilites_export_test.rb b/test/integration/exports/availabilites_export_test.rb
new file mode 100644
index 000000000..25692ffe8
--- /dev/null
+++ b/test/integration/exports/availabilites_export_test.rb
@@ -0,0 +1,60 @@
+# frozen_string_literal: true
+
+require 'test_helper'
+require 'rubyXL'
+
+module Exports; end
+
+class Exports::AccountingExportTest < ActionDispatch::IntegrationTest
+  setup do
+    admin = User.with_role(:admin).first
+    login_as(admin, scope: :user)
+  end
+
+  test 'export availabilities to Excel' do
+    # First, we create a new export
+    get '/api/availabilities/export_index.xlsx'
+
+    # Check response format & status
+    assert_equal 200, response.status, response.body
+    assert_equal Mime[:json], response.content_type
+
+    # Check the export was created correctly
+    res = json_response(response.body)
+    e = Export.where(id: res[:export_id]).first
+    assert_not_nil e, 'Export was not created in database'
+
+    # Run the worker
+    worker = AvailabilitiesExportWorker.new
+    worker.perform(e.id)
+
+    # notification
+    assert_not_empty Notification.where(attached_object: e)
+
+    # resulting XLSX file
+    assert FileTest.exist?(e.file), 'XLSX file was not generated'
+    workbook = RubyXL::Parser.parse(e.file)
+
+    # test worksheets
+    assert_not_nil workbook[I18n.t('export_availabilities.machines')]
+    assert_not_nil workbook[I18n.t('export_availabilities.trainings')]
+    assert_not_nil workbook[I18n.t('export_availabilities.events')]
+    if Setting.get('spaces_module')
+      assert_not_nil workbook[I18n.t('export_availabilities.spaces')]
+    else
+      assert_nil workbook[I18n.t('export_availabilities.spaces')]
+    end
+
+    # test data
+    availability = Availability.find(13)
+    machines = workbook[I18n.t('export_availabilities.machines')]
+    assert_equal availability.start_at.to_date, machines.sheet_data[1][0].value.to_date
+    assert_equal I18n.l(availability.start_at, format: '%A').capitalize, machines.sheet_data[1][1].value
+    assert_match(/^#{availability.start_at.strftime('%H:%M')} - /, machines.sheet_data[1][2].value)
+    assert_includes availability.machines.map(&:name), machines.sheet_data[1][3].value
+
+    # Clean XLSX file
+    require 'fileutils'
+    FileUtils.rm(e.file)
+  end
+end
\ No newline at end of file