diff --git a/doc/source/install/install-debian.rst b/doc/source/install/install-debian.rst
index 8e8a0b93be..05f3df2ed2 100644
--- a/doc/source/install/install-debian.rst
+++ b/doc/source/install/install-debian.rst
@@ -359,8 +359,8 @@ Install and configure components
         auth_url = http://controller:5000
         memcached_servers = controller:11211
         auth_type = password
-        project_domain_name = default
-        user_domain_name = default
+        project_domain_name = Default
+        user_domain_name = Default
         project_name = service
         username = heat
         password = HEAT_PASS
@@ -371,7 +371,7 @@ Install and configure components
         auth_url = http://controller:5000
         username = heat
         password = HEAT_PASS
-        user_domain_name = default
+        user_domain_name = Default
 
         [clients_keystone]
         ...
diff --git a/doc/source/install/install-obs.rst b/doc/source/install/install-obs.rst
index 7d3a97938c..c31cee387d 100644
--- a/doc/source/install/install-obs.rst
+++ b/doc/source/install/install-obs.rst
@@ -360,8 +360,8 @@ Install and configure components
         auth_url = http://controller:5000
         memcached_servers = controller:11211
         auth_type = password
-        project_domain_name = default
-        user_domain_name = default
+        project_domain_name = Default
+        user_domain_name = Default
         project_name = service
         username = heat
         password = HEAT_PASS
@@ -372,7 +372,7 @@ Install and configure components
         auth_url = http://controller:5000
         username = heat
         password = HEAT_PASS
-        user_domain_name = default
+        user_domain_name = Default
 
         [clients_keystone]
         ...
diff --git a/doc/source/install/install-rdo.rst b/doc/source/install/install-rdo.rst
index aa4a32a3df..8904f8e9a4 100644
--- a/doc/source/install/install-rdo.rst
+++ b/doc/source/install/install-rdo.rst
@@ -370,8 +370,8 @@ Install and configure components
         auth_url = http://controller:5000
         memcached_servers = controller:11211
         auth_type = password
-        project_domain_name = default
-        user_domain_name = default
+        project_domain_name = Default
+        user_domain_name = Default
         project_name = service
         username = heat
         password = HEAT_PASS
@@ -382,7 +382,7 @@ Install and configure components
         auth_url = http://controller:5000
         username = heat
         password = HEAT_PASS
-        user_domain_name = default
+        user_domain_name = Default
 
         [clients_keystone]
         ...
diff --git a/doc/source/install/install-ubuntu.rst b/doc/source/install/install-ubuntu.rst
index 1882be3970..76b9714b77 100644
--- a/doc/source/install/install-ubuntu.rst
+++ b/doc/source/install/install-ubuntu.rst
@@ -359,8 +359,8 @@ Install and configure components
         auth_url = http://controller:5000
         memcached_servers = controller:11211
         auth_type = password
-        project_domain_name = default
-        user_domain_name = default
+        project_domain_name = Default
+        user_domain_name = Default
         project_name = service
         username = heat
         password = HEAT_PASS
@@ -371,7 +371,7 @@ Install and configure components
         auth_url = http://controller:5000
         username = heat
         password = HEAT_PASS
-        user_domain_name = default
+        user_domain_name = Default
 
         [clients_keystone]
         ...