diff --git a/guides/common/modules/proc_managing-puppet-modules-with-r10k.adoc b/guides/common/modules/proc_managing-puppet-modules-with-r10k.adoc
index 4e06a7bc68a..8bed774a29a 100644
--- a/guides/common/modules/proc_managing-puppet-modules-with-r10k.adoc
+++ b/guides/common/modules/proc_managing-puppet-modules-with-r10k.adoc
@@ -7,7 +7,7 @@ It does not handle dependencies between Puppet modules.
 
 A _Puppetfile_ looks as follows:
 
-[source,ruby]
+[source, ruby]
 ----
 forge "https://forge.puppet.com"
 
diff --git a/guides/common/modules/ref_customizing-job-templates.adoc b/guides/common/modules/ref_customizing-job-templates.adoc
index c4456799c7a..1d669666ce0 100644
--- a/guides/common/modules/ref_customizing-job-templates.adoc
+++ b/guides/common/modules/ref_customizing-job-templates.adoc
@@ -6,7 +6,7 @@ This way you can combine templates, or create more specific templates from the g
 
 The following template combines default templates to install and start the *nginx* service on clients:
 
-[source, Ruby]
+[source, ruby]
 ----
 <%= render_template 'Package Action - SSH Default', :action => 'install', :package => 'nginx' %>
 <%= render_template 'Service Action - SSH Default', :action => 'start', :service_name => 'nginx' %>
@@ -16,7 +16,7 @@ The above template specifies parameter values for the rendered template directly
 It is also possible to use the *input()* method to allow users to define input for the rendered template on job execution.
 For example, you can use the following syntax:
 
-[source, Ruby]
+[source, ruby]
 ----
 <%= render_template 'Package Action - SSH Default', :action => 'install', :package => input("package") %>
 ----
diff --git a/guides/common/modules/ref_example-including-power-options-in-a-job-template.adoc b/guides/common/modules/ref_example-including-power-options-in-a-job-template.adoc
index 5b984b900d1..9c6934c5119 100644
--- a/guides/common/modules/ref_example-including-power-options-in-a-job-template.adoc
+++ b/guides/common/modules/ref_example-including-power-options-in-a-job-template.adoc
@@ -6,7 +6,7 @@ This procedure prevents {Project} from interpreting the disconnect exception upo
 
 Create a new template as described in {ManagingHostsDocURL}setting-up-job-templates_managing-hosts[Setting up Job Templates], and specify the following string in the template editor:
 
-[source, Ruby]
+[source, ruby]
 ----
 <%= render_template("Power Action - SSH Default", :action => "restart") %>
 ----
diff --git a/guides/common/modules/ref_example-restorecon-template.adoc b/guides/common/modules/ref_example-restorecon-template.adoc
index 08bff0c25eb..b3c1bfc26a4 100644
--- a/guides/common/modules/ref_example-restorecon-template.adoc
+++ b/guides/common/modules/ref_example-restorecon-template.adoc
@@ -10,7 +10,7 @@ This example shows how to create a template called *Run Command - restorecon* th
 Select *Default* to make the template available to all organizations.
 Add the following text to the template editor:
 +
-[source, Ruby]
+[source, ruby]
 ----
 restorecon -RvF <%= input("directory") %>
 ----
diff --git a/guides/common/modules/ref_rendering-a-restorecon-template.adoc b/guides/common/modules/ref_rendering-a-restorecon-template.adoc
index f5f34febb2f..4748c7db108 100644
--- a/guides/common/modules/ref_rendering-a-restorecon-template.adoc
+++ b/guides/common/modules/ref_rendering-a-restorecon-template.adoc
@@ -6,7 +6,7 @@ This template does not require user input on job execution, it will restore the
 
 Create a new template as described in {ManagingHostsDocURL}setting-up-job-templates_managing-hosts[Setting up Job Templates], and specify the following string in the template editor:
 
-[source, Ruby]
+[source, ruby]
 ----
 <%= render_template("Run Command - restorecon", :directory => "/home") %>
 ----