diff --git a/documentation/ref-manual/ref-classes.xml b/documentation/ref-manual/ref-classes.xml
index beb6e3198d..9d5fae55b4 100644
--- a/documentation/ref-manual/ref-classes.xml
+++ b/documentation/ref-manual/ref-classes.xml
@@ -444,11 +444,11 @@
     <para>
         The <filename>copyleft_compliance</filename> class
         preserves source code for the purposes of license compliance.
-        This class is an alternative to the <filename>archive*</filename>
-        classes and is still used by some users even though it has been
+        This class is an alternative to the <filename>archiver</filename>
+        class and is still used by some users even though it has been
         deprecated in favor of the
-        <link linkend='ref-classes-archiver'><filename>archive*</filename></link>
-        classes.
+        <link linkend='ref-classes-archiver'><filename>archiver</filename></link>
+        class.
     </para>
 </section>
 
@@ -637,7 +637,7 @@
 
     <para>
         The <filename>distutils</filename> class supports recipes for Python
-        extensions, which are simple.
+        version 2.x extensions, which are simple.
         These recipes usually only need to point to the source's archive and
         then inherit the proper class.
         Building is split into two methods depending on which method the
@@ -647,8 +647,8 @@
                 require Autotools and
                 <filename>distutils</filename>-based classes in their recipes.
                 </para></listitem>
-            <listitem><para>Extensions that use
-                <filename>distutils</filename>-based build systems require
+            <listitem><para>Extensions that use build systems based on
+                <filename>distutils</filename> require
                 the <filename>distutils</filename> class in their recipes.
                 </para></listitem>
             <listitem><para>Extensions that use build systems based on
@@ -2679,8 +2679,9 @@
     <title><filename>setuptools.bbclass</filename></title>
 
     <para>
-        The <filename>setuptools</filename> class supports Python extensions
-        that use setuptools-based build systems.
+        The <filename>setuptools</filename> class supports Python
+        version 2.x extensions that use build systems based on
+        <filename>setuptools</filename>.
         If your recipe uses these build systems, the recipe needs to
         inherit the <filename>setuptools</filename> class.
     </para>