diff --git a/documentation/ref-manual/ref-classes.xml b/documentation/ref-manual/ref-classes.xml
index 7a451d625c..a602286316 100644
--- a/documentation/ref-manual/ref-classes.xml
+++ b/documentation/ref-manual/ref-classes.xml
@@ -591,7 +591,7 @@
         these checks at the global level (i.e. in your custom distro 
         configuration).
         However, to skip one or more checks in recipes, you should use 
-        <filename>INSANE_SKIP</filename>. 
+        <link linkend='var-INSANE_SKIP'><filename>INSANE_SKIP</filename></link>. 
         For example, to skip the check for symbolic link 
         <filename>.so</filename> files in the main package of a recipe, 
         add the following to the recipe.