diff --git a/app/controllers/admin/domain_versions_controller.rb b/app/controllers/admin/domain_versions_controller.rb
index 9700e26c1..ffb6b50e2 100644
--- a/app/controllers/admin/domain_versions_controller.rb
+++ b/app/controllers/admin/domain_versions_controller.rb
@@ -1,6 +1,7 @@
 class Admin::DomainVersionsController < AdminController
   load_and_authorize_resource
 
+  # rubocop:disable Style/GuardClause
   def index
     @domain = Domain.find(params[:domain_id])
     @versions = @domain.versions
@@ -11,6 +12,7 @@ class Admin::DomainVersionsController < AdminController
       @pending_domain = Epp::Domain.new_from_epp(frame, @pending_user)
     end
   end
+  # rubocop:enable Style/GuardClause
 
   # def index
     # # @q = DomainVersion.deleted.search(params[:q])
diff --git a/app/controllers/admin/pricelists_controller.rb b/app/controllers/admin/pricelists_controller.rb
index ce1431ab0..4de35c2c9 100644
--- a/app/controllers/admin/pricelists_controller.rb
+++ b/app/controllers/admin/pricelists_controller.rb
@@ -51,5 +51,4 @@ class Admin::PricelistsController < AdminController
     params.require(:pricelist).permit(:operation_category, :category, :price_category,
                                       :duration, :price, :valid_from, :valid_to)
   end
-
 end
diff --git a/app/helpers/application_helper.rb b/app/helpers/application_helper.rb
index 6ab5fe4e8..7a75ff78f 100644
--- a/app/helpers/application_helper.rb
+++ b/app/helpers/application_helper.rb
@@ -48,7 +48,7 @@ module ApplicationHelper
 
   def currency(amount)
     amount ||= 0
-    ("%01.2f" % amount.round(2)).sub(/\./, ',')
+    format("%01.2f", amount.round(2)).sub(/\./, ',')
   end
 
   def plain_username(username)
diff --git a/app/models/domain.rb b/app/models/domain.rb
index 3f06fe15b..af1a7240a 100644
--- a/app/models/domain.rb
+++ b/app/models/domain.rb
@@ -546,6 +546,7 @@ class Domain < ActiveRecord::Base
     self.delete_at = outzone_at + Setting.redemption_grace_period.days
   end
 
+  # rubocop:disable Metrics/AbcSize
   def set_force_delete
     self.statuses_backup = statuses
     statuses.delete(DomainStatus::CLIENT_DELETE_PROHIBITED)
@@ -572,6 +573,7 @@ class Domain < ActiveRecord::Base
     self.force_delete_at = Time.zone.now + Setting.redemption_grace_period.days unless force_delete_at
     save(validate: false)
   end
+  # rubocop:enable Metrics/AbcSize
 
   def unset_force_delete
     s = []
diff --git a/spec/models/domain_spec.rb b/spec/models/domain_spec.rb
index 1b9f7568f..a5a48ddb6 100644
--- a/spec/models/domain_spec.rb
+++ b/spec/models/domain_spec.rb
@@ -239,7 +239,7 @@ describe Domain do
         DomainStatus::CLIENT_HOLD,
         DomainStatus::EXPIRED,
         DomainStatus::SERVER_HOLD,
-        DomainStatus::DELETE_CANDIDATE,
+        DomainStatus::DELETE_CANDIDATE
       ]
 
       @domain.save
diff --git a/spec/models/zonefile_setting_spec.rb b/spec/models/zonefile_setting_spec.rb
index 9386c3b1d..9405aa063 100644
--- a/spec/models/zonefile_setting_spec.rb
+++ b/spec/models/zonefile_setting_spec.rb
@@ -41,7 +41,9 @@ describe ZonefileSetting do
 
   it 'should not place serverHold nor clientHold domains into zonefile' do
     Fabricate(:zonefile_setting)
-    d = Fabricate(:domain_with_dnskeys, name: 'testzone.ee', statuses: ['serverHold', 'serverDeleteProhibited', 'clientHold'])
+    d = Fabricate(:domain_with_dnskeys, 
+                  name: 'testzone.ee', 
+                  statuses: ['serverHold', 'serverDeleteProhibited', 'clientHold'])
     d.nameservers << Nameserver.new({
       hostname: "ns.#{d.name}",
       ipv4: '123.123.123.123',