1 files changed, 1 insertions, 12 deletions
diff --git a/lib/gitlab/ci/config/entry/commands.rb b/lib/gitlab/ci/config/entry/commands.rb
index 65d19db249c..9f66f11be9b 100644
--- a/lib/gitlab/ci/config/entry/commands.rb
+++ b/lib/gitlab/ci/config/entry/commands.rb
@@ -9,18 +9,7 @@ module Gitlab
           include Validatable
 
           validations do
-            include LegacyValidationHelpers
-
-            validate do
-              unless string_or_array_of_strings?(config)
-                errors.add(:config,
-                           'should be a string or an array of strings')
-              end
-            end
-
-            def string_or_array_of_strings?(field)
-              validate_string(field) || validate_array_of_strings(field)
-            end
+            validates :config, array_of_strings_or_string: true
           end
 
           def value