diff --git a/tools/apidoc/gen_toc.py b/tools/apidoc/gen_toc.py
index 375850304b7..793f7209449 100644
--- a/tools/apidoc/gen_toc.py
+++ b/tools/apidoc/gen_toc.py
@@ -143,6 +143,7 @@ known_categories = {
 	'AffinityGroup': 'Affinity Group',
     'InternalLoadBalancer': 'Internal LB',
 	'DeploymentPlanners': 'Configuration',
+    'PortableIp': 'Portable IP'
     }