diff --git a/documentation/poky-ref-manual/ref-variables.xml b/documentation/poky-ref-manual/ref-variables.xml
index 005b961a84..c45116e8d8 100644
--- a/documentation/poky-ref-manual/ref-variables.xml
+++ b/documentation/poky-ref-manual/ref-variables.xml
@@ -281,13 +281,13 @@
         <glossentry id='var-BPN'><glossterm>BPN</glossterm>
             <glossdef>
                 <para>The bare name of the recipe or package.
-                    This variable is a version of the <link linkend='var-PN'>PN</link> variable 
+                    This variable is a version of the <link linkend='var-PN'><filename>PN</filename></link> variable 
                     but has common suffixes and prefixes such as "-native", "-cross" and "multilib" 
                     removed.
                     The exact list of suffixes removed is specified by the 
-                    <link linkend='var-SPECIAL_PKGSUFFIX'>SPECIAL_PKGSUFFIX</link> variable.
+                    <link linkend='var-SPECIAL_PKGSUFFIX'><filename>SPECIAL_PKGSUFFIX</filename></link> variable.
                     The exact list of prefixes removed is specified by the 
-                    <link linkend='var-MLPREFIX'>MLPREFIX</link> variable.
+                    <link linkend='var-MLPREFIX'><filename>MLPREFIX</filename></link> variable.
                     Prefixes are removed for multilib and nativesdk cases.</para>
             </glossdef>
         </glossentry>
@@ -1528,11 +1528,11 @@ recipes-graphics/xorg-font/font-alias_1.0.3.bb:PR = "${INC_PR}.3"
             <glossdef>
                 <para>
                     Specifies a prefix has been added to
-                    <link linkend='var-PN'>PN</link> to create a special version 
+                    <link linkend='var-PN'><filename>PN</filename></link> to create a special version 
                     of a recipe or package, such as a multilib version.
                     The variable is used in places where the prefix needs to be 
                     added to or removed from a the name (e.g. the
-                    <link linkend='var-BPN'>BPN</link> variable).
+                    <link linkend='var-BPN'><filename>BPN</filename></link> variable).
                     <filename>MLPREFIX</filename> gets set when a prefix has been 
                     added to <filename>PN</filename>. 
                 </para>
@@ -1960,10 +1960,10 @@ recipes-graphics/xorg-font/font-alias_1.0.3.bb:PR = "${INC_PR}.3"
         <glossentry id='var-SPECIAL_PKGSUFFIX'><glossterm>SPECIAL_PKGSUFFIX</glossterm>
             <glossdef>
                 <para>
-                    A list of prefixes for <link linkend='var-PN'>PN</link> used by the 
+                    A list of prefixes for <link linkend='var-PN'><filename>PN</filename></link> used by the 
                     OpenEmbedded build system to create variants of recipes or packages.
                     The list specifies the prefixes to strip off during certain circumstances
-                    such as the generation of the <link linkend='var-BPN'>BPN</link> variable.
+                    such as the generation of the <link linkend='var-BPN'><filename>BPN</filename></link> variable.
                 </para>
             </glossdef>
         </glossentry>