diff --git a/reference/pthreads/collectable.xml b/reference/pthreads/collectable.xml
index 0bea836ba1..b8d616a372 100644
--- a/reference/pthreads/collectable.xml
+++ b/reference/pthreads/collectable.xml
@@ -12,7 +12,12 @@
   <section xml:id="collectable.intro">
    &reftitle.intro;
    <para>
-  Collectable objects are intended to be used by the Pool class, replacing Threaded objects as the unit of work, they provide methods to set and detect the collectability of an object.
+    Represents a garbage-collectable object.
+   </para>
+   <para>
+    Collectable objects are intended to be used by the <classname>Pool</classname> class,
+    replacing <classname>Threaded</classname> objects as the unit of work.
+    They provide methods to set and detect the collectability of an object.
    </para>
   </section>
 <!-- }}} -->