diff --git a/README.md b/README.md
index 8c41fc7..129f783 100644
--- a/README.md
+++ b/README.md
@@ -30,11 +30,12 @@ class { 'puppetserver': }
 class { 'puppetserver::repository': } ->
 class { 'puppetserver':
   config => {
-    'java_args'     => {
-      'xms'         => '4g',
-      'xmx'         => '6g',
-      'maxpermsize' => '512m',
-      'tmpdir'      => '/tmp',
+    'java_args'               => {
+      'xms'                   => '4g',
+      'xmx'                   => '6g',
+      'maxpermsize'           => '512m',
+      'reservedcodecachesize' => '512m',
+      'tmpdir'                => '/tmp',
     },
 
     'webserver'  => {
@@ -131,7 +132,7 @@ gem { 'hiera-eyaml':
   provider => puppetserver_gem,
 }
 ```
- 
+
 ## Contributing
 
 Please report bugs and feature request using [GitHub issue
@@ -140,7 +141,7 @@ tracker](https://github.com/camptocamp/puppet-puppetserver/issues).
 For pull requests, it is very much appreciated to check your Puppet manifest
 with [puppet-lint](http://puppet-lint.com/) to follow the recommended Puppet style guidelines from the
 [Puppet Labs style guide](http://docs.puppetlabs.com/guides/style_guide.html).
- 
+
 
 ## Transfer Notice
 
diff --git a/manifests/config.pp b/manifests/config.pp
index ac8fafb..8f7d80c 100644
--- a/manifests/config.pp
+++ b/manifests/config.pp
@@ -20,6 +20,11 @@
       type    => 'java_arg',
       ;
 
+    'java_args/reservedcodecachesize':
+      setting => '-XX:ReservedCodeCacheSize=',
+      type    => 'java_arg',
+      ;
+
     'webserver/port':
       setting => 'webserver.conf/webserver/port',
       type    => 'puppetserver',