diff --git a/tools/apidoc/gen_toc.py b/tools/apidoc/gen_toc.py
index 7739aea633f..0b281a29c1d 100644
--- a/tools/apidoc/gen_toc.py
+++ b/tools/apidoc/gen_toc.py
@@ -129,7 +129,6 @@ known_categories = {
     'AutoScale': 'AutoScale',
     'Counter': 'AutoScale',
     'Condition': 'AutoScale',
-    'Api': 'API Discovery',
     }