diff --git a/.rubocop.yml b/.rubocop.yml
index 10eb93318..c48d754f1 100644
--- a/.rubocop.yml
+++ b/.rubocop.yml
@@ -252,7 +252,8 @@ Layout/SpaceInsideHashLiteralBraces:
   Enabled: true
 
 Layout/SpaceInsideArrayLiteralBrackets:
-  Enabled: false
+  Enabled: true
+  EnforcedStyle: no_space
 
 Layout/SpaceInsideParens:
   Enabled: true
diff --git a/app/models/champ.rb b/app/models/champ.rb
index 7771007c6..1a9a98241 100644
--- a/app/models/champ.rb
+++ b/app/models/champ.rb
@@ -36,7 +36,7 @@ class Champ < ApplicationRecord
   end
 
   def search_terms
-    [ to_s ]
+    [to_s]
   end
 
   def to_s
diff --git a/app/models/champs/checkbox_champ.rb b/app/models/champs/checkbox_champ.rb
index 9202ca635..8261743f3 100644
--- a/app/models/champs/checkbox_champ.rb
+++ b/app/models/champs/checkbox_champ.rb
@@ -1,7 +1,7 @@
 class Champs::CheckboxChamp < Champ
   def search_terms
     if value == 'on'
-      [ libelle ]
+      [libelle]
     end
   end
 
diff --git a/app/models/champs/engagement_champ.rb b/app/models/champs/engagement_champ.rb
index efd968c5e..c3173e69e 100644
--- a/app/models/champs/engagement_champ.rb
+++ b/app/models/champs/engagement_champ.rb
@@ -1,7 +1,7 @@
 class Champs::EngagementChamp < Champs::CheckboxChamp
   def search_terms
     if value == 'on'
-      [ libelle ]
+      [libelle]
     end
   end
 end
diff --git a/app/models/champs/linked_drop_down_list_champ.rb b/app/models/champs/linked_drop_down_list_champ.rb
index f965a472c..db12156a0 100644
--- a/app/models/champs/linked_drop_down_list_champ.rb
+++ b/app/models/champs/linked_drop_down_list_champ.rb
@@ -38,7 +38,7 @@ class Champs::LinkedDropDownListChamp < Champ
   end
 
   def search_terms
-    [ primary_value, secondary_value ]
+    [primary_value, secondary_value]
   end
 
   private
@@ -52,6 +52,6 @@ class Champs::LinkedDropDownListChamp < Champ
   end
 
   def pack_value(primary, secondary)
-    self.value = JSON.generate([ primary, secondary ])
+    self.value = JSON.generate([primary, secondary])
   end
 end
diff --git a/app/models/champs/siret_champ.rb b/app/models/champs/siret_champ.rb
index b36e3c1ba..c2eb139b5 100644
--- a/app/models/champs/siret_champ.rb
+++ b/app/models/champs/siret_champ.rb
@@ -40,6 +40,6 @@ class Champs::SiretChamp < Champ
   accepts_nested_attributes_for :etablissement, allow_destroy: true, update_only: true
 
   def search_terms
-    etablissement.present? ? etablissement.search_terms : [ value ]
+    etablissement.present? ? etablissement.search_terms : [value]
   end
 end
diff --git a/app/models/champs/yes_no_champ.rb b/app/models/champs/yes_no_champ.rb
index 27ead824a..7c29930fb 100644
--- a/app/models/champs/yes_no_champ.rb
+++ b/app/models/champs/yes_no_champ.rb
@@ -1,7 +1,7 @@
 class Champs::YesNoChamp < Champs::CheckboxChamp
   def search_terms
     if value == 'true'
-      [ libelle ]
+      [libelle]
     end
   end
 
diff --git a/app/models/procedure_presentation.rb b/app/models/procedure_presentation.rb
index d06e1ece6..abcda68bf 100644
--- a/app/models/procedure_presentation.rb
+++ b/app/models/procedure_presentation.rb
@@ -215,7 +215,7 @@ class ProcedurePresentation < ApplicationRecord
   def valid_columns_for_table(table)
     @column_whitelist ||= fields
       .group_by { |field| field['table'] }
-      .map { |table, fields| [table, Set.new(fields.map { |field| field['column'] }) ] }
+      .map { |table, fields| [table, Set.new(fields.map { |field| field['column'] })] }
       .to_h
 
     @column_whitelist[table] || []
diff --git a/db/migrate/20180130180754_create_active_storage_tables.active_storage.rb b/db/migrate/20180130180754_create_active_storage_tables.active_storage.rb
index 360e0d1b7..a3b996c1e 100644
--- a/db/migrate/20180130180754_create_active_storage_tables.active_storage.rb
+++ b/db/migrate/20180130180754_create_active_storage_tables.active_storage.rb
@@ -10,7 +10,7 @@ class CreateActiveStorageTables < ActiveRecord::Migration[5.2]
       t.string   :checksum,   null: false
       t.datetime :created_at, null: false
 
-      t.index [ :key ], unique: true
+      t.index [:key], unique: true
     end
 
     create_table :active_storage_attachments do |t|
@@ -20,7 +20,7 @@ class CreateActiveStorageTables < ActiveRecord::Migration[5.2]
 
       t.datetime :created_at, null: false
 
-      t.index [ :record_type, :record_id, :name, :blob_id ], name: "index_active_storage_attachments_uniqueness", unique: true
+      t.index [:record_type, :record_id, :name, :blob_id], name: "index_active_storage_attachments_uniqueness", unique: true
     end
   end
 end
diff --git a/spec/helpers/conservation_de_donnees_helper_spec.rb b/spec/helpers/conservation_de_donnees_helper_spec.rb
index e15a59e56..8edacefe9 100644
--- a/spec/helpers/conservation_de_donnees_helper_spec.rb
+++ b/spec/helpers/conservation_de_donnees_helper_spec.rb
@@ -10,21 +10,21 @@ RSpec.describe ConservationDeDonneesHelper, type: :helper do
       let(:dans_ds) { 3 }
       let(:hors_ds) { 6 }
 
-      it { is_expected.to eq([ "Dans demarches-simplifiees.fr : 3 mois", "Par l’administration : 6 mois" ]) }
+      it { is_expected.to eq(["Dans demarches-simplifiees.fr : 3 mois", "Par l’administration : 6 mois"]) }
     end
 
     context "when only in-app retention time is set" do
       let(:dans_ds) { 3 }
       let(:hors_ds) { nil }
 
-      it { is_expected.to eq([ "Dans demarches-simplifiees.fr : 3 mois" ]) }
+      it { is_expected.to eq(["Dans demarches-simplifiees.fr : 3 mois"]) }
     end
 
     context "when only out of app retention time is set" do
       let(:dans_ds) { nil }
       let(:hors_ds) { 6 }
 
-      it { is_expected.to eq([ "Par l’administration : 6 mois" ]) }
+      it { is_expected.to eq(["Par l’administration : 6 mois"]) }
     end
 
     context "when the retention time is not set" do
diff --git a/spec/models/champ_spec.rb b/spec/models/champ_spec.rb
index 461aa4fdb..e2c80d524 100644
--- a/spec/models/champ_spec.rb
+++ b/spec/models/champ_spec.rb
@@ -128,7 +128,7 @@ describe Champ do
         let(:type_de_champ) { build(:type_de_champ_address) }
         let(:value) { "10 rue du Pinson qui Piaille" }
 
-        it { is_expected.to eq([ value ]) }
+        it { is_expected.to eq([value]) }
       end
 
       context 'for checkbox champ' do
@@ -138,7 +138,7 @@ describe Champ do
         context 'when the box is checked' do
           let(:value) { 'on' }
 
-          it { is_expected.to eq([ libelle ]) }
+          it { is_expected.to eq([libelle]) }
         end
 
         context 'when the box is unchecked' do
@@ -152,7 +152,7 @@ describe Champ do
         let(:type_de_champ) { build(:type_de_champ_civilite) }
         let(:value) { "M." }
 
-        it { is_expected.to eq([ value ]) }
+        it { is_expected.to eq([value]) }
       end
 
       context 'for date champ' do
@@ -173,28 +173,28 @@ describe Champ do
         let(:type_de_champ) { build(:type_de_champ_departements) }
         let(:value) { "69 - Rhône" }
 
-        it { is_expected.to eq([ value ]) }
+        it { is_expected.to eq([value]) }
       end
 
       context 'for dossier link champ' do
         let(:type_de_champ) { build(:type_de_champ_dossier_link) }
         let(:value) { "9103132886" }
 
-        it { is_expected.to eq([ value ]) }
+        it { is_expected.to eq([value]) }
       end
 
       context 'for drop down list champ' do
         let(:type_de_champ) { build(:type_de_champ_dossier_link) }
         let(:value) { "HLM" }
 
-        it { is_expected.to eq([ value ]) }
+        it { is_expected.to eq([value]) }
       end
 
       context 'for email champ' do
         let(:type_de_champ) { build(:type_de_champ_email) }
         let(:value) { "machin@example.com" }
 
-        it { is_expected.to eq([ value ]) }
+        it { is_expected.to eq([value]) }
       end
 
       context 'for engagement champ' do
@@ -204,7 +204,7 @@ describe Champ do
         context 'when the box is checked' do
           let(:value) { 'on' }
 
-          it { is_expected.to eq([ libelle ]) }
+          it { is_expected.to eq([libelle]) }
         end
 
         context 'when the box is unchecked' do
@@ -239,7 +239,7 @@ describe Champ do
         let(:type_de_champ) { build(:type_de_champ_multiple_drop_down_list) }
 
         context 'when there are multiple values selected' do
-          let(:value) { JSON.generate([ 'goodbye', 'cruel', 'world' ]) }
+          let(:value) { JSON.generate(['goodbye', 'cruel', 'world']) }
 
           it { is_expected.to eq(["goodbye", "cruel", "world"]) }
         end
@@ -255,21 +255,21 @@ describe Champ do
         let(:type_de_champ) { build(:type_de_champ_number) }
         let(:value) { "1234" }
 
-        it { is_expected.to eq([ value ]) }
+        it { is_expected.to eq([value]) }
       end
 
       context 'for pays champ' do
         let(:type_de_champ) { build(:type_de_champ_pays) }
         let(:value) { "FRANCE" }
 
-        it { is_expected.to eq([ value ]) }
+        it { is_expected.to eq([value]) }
       end
 
       context 'for phone champ' do
         let(:type_de_champ) { build(:type_de_champ_phone) }
         let(:value) { "0606060606" }
 
-        it { is_expected.to eq([ value ]) }
+        it { is_expected.to eq([value]) }
       end
 
       context 'for pièce justificative champ' do
@@ -283,7 +283,7 @@ describe Champ do
         let(:type_de_champ) { build(:type_de_champ_regions) }
         let(:value) { "Île-de-France" }
 
-        it { is_expected.to eq([ value ]) }
+        it { is_expected.to eq([value]) }
       end
 
       context 'for siret champ' do
@@ -325,14 +325,14 @@ describe Champ do
           end
           let(:champ) { type_de_champ.champ.build(value: etablissement.siret, etablissement: etablissement) }
 
-          it { is_expected.to eq([ etablissement.entreprise_siren, etablissement.entreprise_numero_tva_intracommunautaire, etablissement.entreprise_forme_juridique, etablissement.entreprise_forme_juridique_code, etablissement.entreprise_nom_commercial, etablissement.entreprise_raison_sociale, etablissement.entreprise_siret_siege_social, etablissement.entreprise_nom, etablissement.entreprise_prenom, etablissement.association_rna, etablissement.association_titre, etablissement.association_objet, etablissement.siret, etablissement.naf, etablissement.libelle_naf, etablissement.adresse, etablissement.code_postal, etablissement.localite, etablissement.code_insee_localite ]) }
+          it { is_expected.to eq([etablissement.entreprise_siren, etablissement.entreprise_numero_tva_intracommunautaire, etablissement.entreprise_forme_juridique, etablissement.entreprise_forme_juridique_code, etablissement.entreprise_nom_commercial, etablissement.entreprise_raison_sociale, etablissement.entreprise_siret_siege_social, etablissement.entreprise_nom, etablissement.entreprise_prenom, etablissement.association_rna, etablissement.association_titre, etablissement.association_objet, etablissement.siret, etablissement.naf, etablissement.libelle_naf, etablissement.adresse, etablissement.code_postal, etablissement.localite, etablissement.code_insee_localite]) }
         end
 
         context 'when there is no etablissement' do
           let(:siret) { "35130347400024" }
           let(:champ) { type_de_champ.champ.build(value: siret) }
 
-          it { is_expected.to eq([ siret ]) }
+          it { is_expected.to eq([siret]) }
         end
       end
 
@@ -340,14 +340,14 @@ describe Champ do
         let(:type_de_champ) { build(:type_de_champ_text) }
         let(:value) { "Blah" }
 
-        it { is_expected.to eq([ value ]) }
+        it { is_expected.to eq([value]) }
       end
 
       context 'for text area champ' do
         let(:type_de_champ) { build(:type_de_champ_textarea) }
         let(:value) { "Bla\nBlah de bla." }
 
-        it { is_expected.to eq([ value ]) }
+        it { is_expected.to eq([value]) }
       end
 
       context 'for yes/no champ' do
@@ -357,7 +357,7 @@ describe Champ do
         context 'when the box is checked' do
           let(:value) { "true" }
 
-          it { is_expected.to eq([ libelle ]) }
+          it { is_expected.to eq([libelle]) }
         end
 
         context 'when the box is unchecked' do
diff --git a/spec/models/types_de_champ/linked_drop_down_list_type_de_champ_spec.rb b/spec/models/types_de_champ/linked_drop_down_list_type_de_champ_spec.rb
index b7ee29bdf..18c551bd4 100644
--- a/spec/models/types_de_champ/linked_drop_down_list_type_de_champ_spec.rb
+++ b/spec/models/types_de_champ/linked_drop_down_list_type_de_champ_spec.rb
@@ -96,13 +96,13 @@ describe TypesDeChamp::LinkedDropDownListTypeDeChamp do
         expect(subject.secondary_options).to eq(
           {
             '' => [],
-            'Primary 1' => [ '', 'secondary 1.1', 'secondary 1.2'],
-            'Primary 2' => [ '', 'secondary 2.1', 'secondary 2.2', 'secondary 2.3']
+            'Primary 1' => ['', 'secondary 1.1', 'secondary 1.2'],
+            'Primary 2' => ['', 'secondary 2.1', 'secondary 2.2', 'secondary 2.3']
           }
         )
       end
 
-      it { expect(subject.primary_options).to eq([ '', 'Primary 1', 'Primary 2' ]) }
+      it { expect(subject.primary_options).to eq(['', 'Primary 1', 'Primary 2']) }
     end
   end
 end