diff --git a/documentation/ref-manual/ref-classes.xml b/documentation/ref-manual/ref-classes.xml
index 111c060642..b6249e0359 100644
--- a/documentation/ref-manual/ref-classes.xml
+++ b/documentation/ref-manual/ref-classes.xml
@@ -2015,9 +2015,8 @@
     <title><filename>populate_sdk_*.bbclass</filename></title>
 
     <para>
-        The <filename>populate_sdk_*</filename> family of classes support
-        SDK creation.
-        This family of classes consists of the following:
+        The <filename>populate_sdk_*</filename> classes support SDK creation
+        and consist of the following classes:
         <itemizedlist>
             <listitem><para><emphasis><filename>populate_sdk_base</filename>:</emphasis>
                 The base class supporting SDK creation under all package