diff --git a/tools/apidoc/gen_toc.py b/tools/apidoc/gen_toc.py
index d612ac4c941..e8ceb4a7dab 100644
--- a/tools/apidoc/gen_toc.py
+++ b/tools/apidoc/gen_toc.py
@@ -152,6 +152,7 @@ known_categories = {
     'prepareSecondaryStorageForMigration' : 'Image Store',
     'InternalLoadBalancer': 'Internal LB',
 	'DeploymentPlanners': 'Configuration',
+	'ObjectStore': 'Image Store',
     'PortableIp': 'Portable IP',
     'dedicateHost': 'Dedicate Resources',
     'releaseDedicatedHost': 'Dedicate Resources',