diff --git a/modules/openapi_swagger_ui/src/Controller/SwaggerUIRestController.php b/modules/openapi_swagger_ui/src/Controller/SwaggerUIRestController.php
index 3d21173..e67960b 100644
--- a/modules/openapi_swagger_ui/src/Controller/SwaggerUIRestController.php
+++ b/modules/openapi_swagger_ui/src/Controller/SwaggerUIRestController.php
@@ -55,6 +55,32 @@ class SwaggerUIRestController extends SwaggerUIControllerBase {
           ],
         ];
       }
+      else {
+        // This entity type doesn't have bundles
+        $bundle_links = [];
+        $bundle_links[$entity_type_id] = [
+          'title' => $entity_type->getLabel(),
+          'url' => Url::fromRoute('openapi.swagger_ui.rest',
+            [],
+            [
+              'query' => [
+                'options' =>
+                  [
+                    'entity_type_id' => $entity_type_id,
+                  ],
+              ],
+            ]
+          ),
+        ];
+        $return[$entity_type_id] = [
+          '#theme' => 'links',
+          '#links' => $bundle_links,
+          '#heading' => [
+            'text' => $this->t('@entity_type bundles', ['@entity_type' => $entity_type->getLabel()]),
+            'level' => 'h3',
+          ],
+        ];
+      }
     }
     return $return;
   }