diff --git a/manifests/project/apache.pp b/manifests/project/apache.pp
index cec3047..105c72c 100644
--- a/manifests/project/apache.pp
+++ b/manifests/project/apache.pp
@@ -155,6 +155,7 @@
     ssl                 => $ssl,
     docroot             => "${::projects::basedir}/${projectname}/var/${docroot}",
     logroot             => "${::projects::basedir}/${projectname}/var/log/httpd",
+    use_optional_includes => "true",
     additional_includes =>
       ["${::projects::basedir}/${projectname}/etc/apache/conf.d/*.conf",
       "${::projects::basedir}/${projectname}/etc/apache/conf.d/${title}/*.conf"],