diff --git a/doc/source/install/controller-install-obs.rst b/doc/source/install/controller-install-obs.rst
index 623c674eb..7895d3665 100644
--- a/doc/source/install/controller-install-obs.rst
+++ b/doc/source/install/controller-install-obs.rst
@@ -1,5 +1,5 @@
-Install and configure controller node
-~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+Install and configure controller node for openSUSE and SUSE Linux Enterprise
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 
 This section describes how to install and configure the Compute service,
 code-named nova, on the controller node.
diff --git a/doc/source/install/controller-install-rdo.rst b/doc/source/install/controller-install-rdo.rst
index 54f59deab..44c4a297e 100644
--- a/doc/source/install/controller-install-rdo.rst
+++ b/doc/source/install/controller-install-rdo.rst
@@ -1,5 +1,5 @@
-Install and configure controller node
-~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+Install and configure controller node for Red Hat Enterprise Linux and CentOS
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 
 This section describes how to install and configure the Compute service,
 code-named nova, on the controller node.
diff --git a/doc/source/install/controller-install-ubuntu.rst b/doc/source/install/controller-install-ubuntu.rst
index d6aa010c5..497f5145d 100644
--- a/doc/source/install/controller-install-ubuntu.rst
+++ b/doc/source/install/controller-install-ubuntu.rst
@@ -1,5 +1,5 @@
-Install and configure controller node
-~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+Install and configure controller node for Ubuntu
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 
 This section describes how to install and configure the Compute service,
 code-named nova, on the controller node.