diff --git a/documentation/ref-manual/introduction.xml b/documentation/ref-manual/introduction.xml
index 6a50aa767f..1ccab188ec 100644
--- a/documentation/ref-manual/introduction.xml
+++ b/documentation/ref-manual/introduction.xml
@@ -385,9 +385,11 @@
                         </literallayout></para></listitem>
                 </itemizedlist>
                 <note>
-                    Sanity testing and
+                    Sanity testing, through the
+                    <link linkend='ref-classes-testimage*'>testimage</link>
+                    classes, does not work on systems using the
                     <ulink url='https://en.opensuse.org/Portal:Wicked'>Wicked</ulink>
-                    do not work reliably together.
+                    network manager.
                 </note>
             </para>
         </section>