diff --git a/lib/gitlab/fake_application_settings.rb b/lib/gitlab/fake_application_settings.rb
index 753160cc562..2c827265d8c 100644
--- a/lib/gitlab/fake_application_settings.rb
+++ b/lib/gitlab/fake_application_settings.rb
@@ -5,16 +5,6 @@
 # column type without parsing db/schema.rb.
 module Gitlab
   class FakeApplicationSettings < OpenStruct
-    def initialize(options = {})
-      super
-
-      FakeApplicationSettings.define_predicate_methods(options)
-    end
-
-    def pick_repository_storage
-      repository_storages.sample
-    end
-
     # Mimic ActiveRecord predicate methods for boolean values
     def self.define_predicate_methods(options)
       options.each do |key, value|
@@ -27,5 +17,23 @@ module Gitlab
         end
       end
     end
+
+    def initialize(options = {})
+      super
+
+      FakeApplicationSettings.define_predicate_methods(options)
+    end
+
+    def key_restriction_for(type)
+      0
+    end
+
+    def allowed_key_types
+      ApplicationSetting::SUPPORTED_KEY_TYPES
+    end
+
+    def pick_repository_storage
+      repository_storages.sample
+    end
   end
 end