diff --git a/doc/install-guide/source/get-started-conceptual-architecture.rst b/doc/install-guide/source/get-started-conceptual-architecture.rst
index 0ff2d5a69b..cd511fc7a1 100644
--- a/doc/install-guide/source/get-started-conceptual-architecture.rst
+++ b/doc/install-guide/source/get-started-conceptual-architecture.rst
@@ -11,3 +11,4 @@ services:
 
 .. image:: figures/openstack_kilo_conceptual_arch.png
    :alt: OpenStack conceptual architecture
+   :width: 100%