diff --git a/documentation/poky-ref-manual/ref-structure.xml b/documentation/poky-ref-manual/ref-structure.xml
index f0f01b92c5..97ecf2a70f 100644
--- a/documentation/poky-ref-manual/ref-structure.xml
+++ b/documentation/poky-ref-manual/ref-structure.xml
@@ -583,6 +583,15 @@
         </para>
     </section>
 
+    <section id='structure-meta-recipes-rt'>
+        <title><filename>meta/recipes-rt/</filename></title>
+
+        <para>
+            This directory contains package and image recipes for using and testing
+            the <filename>PREEMPT_RT</filename> kernel. 
+        </para>
+    </section>
+
     <section id='structure-meta-recipes-sato'>
         <title><filename>meta/recipes-sato/</filename></title>