diff --git a/.rubocop_todo.yml b/.rubocop_todo.yml
index 0a24819d2..48be03770 100644
--- a/.rubocop_todo.yml
+++ b/.rubocop_todo.yml
@@ -270,7 +270,6 @@ Layout/IndentFirstHashElement:
 Layout/IndentHeredoc:
   Exclude:
     - 'test/helpers/application_helper_test.rb'
-    - 'test/integration/api_test/custom_fields_attribute_test.rb'
     - 'test/integration/api_test/files_test.rb'
     - 'test/integration/lib/redmine/hook_test.rb'
     - 'test/unit/lib/redmine/syntax_highlighting/rouge_test.rb'
@@ -285,7 +284,6 @@ Layout/IndentHeredoc:
 # SupportedStyles: normal, indented_internal_methods
 Layout/IndentationConsistency:
   Exclude:
-    - 'test/integration/api_test/custom_fields_attribute_test.rb'
     - 'test/mocks/open_id_authentication_mock.rb'
 
 # Cop supports --auto-correct.
diff --git a/test/integration/api_test/custom_fields_attribute_test.rb b/test/integration/api_test/custom_fields_attribute_test.rb
index f434d3c46..04ab05c2f 100644
--- a/test/integration/api_test/custom_fields_attribute_test.rb
+++ b/test/integration/api_test/custom_fields_attribute_test.rb
@@ -81,14 +81,12 @@ class Redmine::ApiTest::CustomFieldsAttributeTest < Redmine::ApiTest::Base
       :possible_values => ["V1", "V2", "V3"],
       :default_value => "V2"
     )
-
-payload = <<-JSON
-{"group": {"name":"Foooo",
-"custom_field_values":{"#{field.id}":["V1","V3"]}
-}
-}
-JSON
-
+    payload = <<~JSON
+      {"group": {"name":"Foooo",
+      "custom_field_values":{"#{field.id}":["V1","V3"]}
+      }
+      }
+    JSON
     post '/groups.json',
       :params => payload,
       :headers => {