diff --git a/doc/arch-design/source/index.rst b/doc/arch-design/source/index.rst
index 0835c33813..5adff1c70b 100644
--- a/doc/arch-design/source/index.rst
+++ b/doc/arch-design/source/index.rst
@@ -37,7 +37,7 @@ Before reading this book, we recommend:
For information about deploying and operating OpenStack, see the
`Installation Guides `_,
`Deployment Guides `_,
-and the `OpenStack Operations Guide `_.
+and the `OpenStack Operations Guide `_.
Contents
~~~~~~~~