diff --git a/documentation/ref-manual/ref-classes.xml b/documentation/ref-manual/ref-classes.xml
index 450501694c..1b56bff03e 100644
--- a/documentation/ref-manual/ref-classes.xml
+++ b/documentation/ref-manual/ref-classes.xml
@@ -1540,6 +1540,27 @@
     </para>
 </section>
 
+<section id='ref-classes-ptest'>
+    <title><filename>ptest.bbclass</filename></title>
+
+    <para>
+        The <filename>ptest</filename> class provides functionality for
+        packaging and installing runtime tests for recipes that build software
+        that provides these tests.
+    </para>
+
+    <para>
+        This class is intended to be inherited by individual recipes.
+        However, the class' functionality is largely disabled unless "ptest"
+        appears in
+        <link linkend='var-DISTRO_FEATURES'><filename>DISTRO_FEATURES</filename></link>.
+        See the
+        "<ulink url='&YOCTO_DOCS_DEV_URL;#testing-packages-with-ptest'>Testing Packages With ptest</ulink>"
+        section in the Yocto Project Development Manual for more information
+        on ptest.
+    </para>
+</section>
+
 <section id='ref-classes-distutils'>
     <title>Python Extensions - <filename>distutils.bbclass</filename></title>