diff --git a/spec/requests/api/schemas/json/site_response.json b/spec/requests/api/schemas/json/site_response.json
index 62055ef4b51..4b5c4af24c0 100644
--- a/spec/requests/api/schemas/json/site_response.json
+++ b/spec/requests/api/schemas/json/site_response.json
@@ -634,6 +634,16 @@
             },
             "can_edit": {
               "type": "boolean"
+            },
+            "custom_fields": {
+              "type": [
+                "object",
+                "null"
+              ],
+              "additionalProperties": true
+            },
+            "parent_category_id": {
+              "type": "integer"
             }
           },
           "required": [
diff --git a/spec/requests/api/site_spec.rb b/spec/requests/api/site_spec.rb
index ee8016f5189..9d026b5dfbb 100644
--- a/spec/requests/api/site_spec.rb
+++ b/spec/requests/api/site_spec.rb
@@ -3,7 +3,9 @@ require 'swagger_helper'
 
 describe 'site' do
 
-  let(:admin) { Fabricate(:admin) }
+  fab!(:admin) { Fabricate(:admin) }
+  fab!(:category) { Fabricate(:category) }
+  fab!(:subcategory) { Fabricate(:category, parent_category: category) }
 
   before do
     Jobs.run_immediately!
@@ -21,12 +23,18 @@ describe 'site' do
 
       produces 'application/json'
       response '200', 'success response' do
-        expected_response_schema = load_spec_schema('site_response')
-        schema expected_response_schema
+        begin
+          Site.preloaded_category_custom_fields << "no_oddjob"
 
-        it_behaves_like "a JSON endpoint", 200 do
-          let(:expected_response_schema) { expected_response_schema }
-          let(:expected_request_schema) { expected_request_schema }
+          expected_response_schema = load_spec_schema('site_response')
+          schema expected_response_schema
+
+          it_behaves_like "a JSON endpoint", 200 do
+            let(:expected_response_schema) { expected_response_schema }
+            let(:expected_request_schema) { expected_request_schema }
+          end
+        ensure
+          Site.preloaded_category_custom_fields = Set.new
         end
       end
     end