diff --git a/documentation/ref-manual/ref-variables.xml b/documentation/ref-manual/ref-variables.xml
index b40c2667ea..e64b0d5ca9 100644
--- a/documentation/ref-manual/ref-variables.xml
+++ b/documentation/ref-manual/ref-variables.xml
@@ -12273,13 +12273,16 @@ recipes-graphics/xorg-font/font-alias_1.0.3.bb:PR = "${INC_PR}.3"
                     <link linkend='ref-classes-populate-sdk-*'><filename>populate_sdk_base</filename></link>
                     class defines the variable as follows:
                     <literallayout class='monospaced'>
+     SDK_DIR = "${WORKDIR}/sdk"
      SDK_OUTPUT = "${SDK_DIR}/image"
+     SDK_DEPLOY = "${DEPLOY_DIR}/sdk"
                     </literallayout>
                     <note>
                         The <filename>SDK_OUTPUT</filename> directory is a
                         temporary directory as it is part of
-                        <filename>WORKDIR</filename> by way of
-                        <filename>SDK_DIR</filename>.
+                        <link linkend='var-WORKDIR'><filename>WORKDIR</filename></link>
+                        by way of
+                        <link linkend='var-SDK_DIR'><filename>SDK_DIR</filename></link>.
                         The final output directory is
                         <link linkend='var-SDK_DEPLOY'><filename>SDK_DEPLOY</filename></link>.
                     </note>