diff --git a/doc/source/api/index.rst b/doc/source/api/index.rst
index fd0ecfd97..ebcce621d 100644
--- a/doc/source/api/index.rst
+++ b/doc/source/api/index.rst
@@ -1,3 +1,7 @@
+==================================================
+OpenStack Infrastructure Optimization Service APIs
+==================================================
+
 .. toctree::
    :maxdepth: 1