diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 745c02c..7afea87 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -12,3 +12,23 @@ jobs:
         run: bundle install
       - name: Run linter
         run: bin/rubocop
+
+  test:
+    runs-on: ubuntu-latest
+    strategy:
+      fail-fast: false
+      matrix:
+        ruby_version:
+          - 2.7
+          - 3.0
+          - 3.1
+          - 3.2
+    steps:
+      - uses: actions/checkout@v3
+      - uses: ruby/setup-ruby@v1
+        with:
+          ruby-version: ${{ matrix.ruby_version }}
+      - name: Install dependencies
+        run: bundle install
+      - name: Run tests
+        run: bin/rspec
diff --git a/lib/apia/open_api/objects/schema.rb b/lib/apia/open_api/objects/schema.rb
index 908e5d1..a359301 100644
--- a/lib/apia/open_api/objects/schema.rb
+++ b/lib/apia/open_api/objects/schema.rb
@@ -92,7 +92,7 @@ def generate_child_schemas
 
           all_properties_included = error_definition? || enum_definition? || @endpoint.nil?
           @children.each do |child|
-            next unless @endpoint.nil? || (!enum_definition? && @endpoint.include_field?(@path + [child.name]))
+            next unless @endpoint.nil? || (!enum_definition? && @endpoint.include_field?(@path + [child]))
 
             if child.respond_to?(:array?) && child.array?
               generate_schema_for_child_array(@schema, child, all_properties_included)