diff --git a/doc/source/index-introduction.rst b/doc/source/index-introduction.rst
index 2bcbbd9b..684fa07d 100644
--- a/doc/source/index-introduction.rst
+++ b/doc/source/index-introduction.rst
@@ -1,5 +1,5 @@
 TripleO is a project aimed at installing, upgrading and operating OpenStack
-clouds using OpenStack's own cloud facilities as the foundations - building on
+clouds using OpenStack's own cloud facilities as the foundation - building on
 Nova, Ironic, Neutron and Heat to automate cloud management at datacenter
 scale.