diff --git a/documentation/ref-manual/ref-variables.xml b/documentation/ref-manual/ref-variables.xml
index 1f49351f6e..b04b4ed474 100644
--- a/documentation/ref-manual/ref-variables.xml
+++ b/documentation/ref-manual/ref-variables.xml
@@ -3772,6 +3772,33 @@ recipes-graphics/xorg-font/font-alias_1.0.3.bb:PR = "${INC_PR}.3"
             </glossdef>
         </glossentry>
 
+        <glossentry id='var-PARALLEL_MAKEINST'><glossterm>PARALLEL_MAKEINST</glossterm>
+            <glossdef>
+                <para>
+                    Extra options passed to the
+                    <filename>make install</filename> command during the
+                    <filename>do_install</filename> task in order to specify
+                    parallel installation.
+                    This variable defaults to the value of
+                    <link linkend='var-PARALLEL_MAKE'><filename>PARALLEL_MAKE</filename></link>.
+                    <note>
+                        Individual recipes might clear out this variable if
+                        the software being built has problems running its
+                        <filename>make install</filename> process in parallel.
+                    </note>
+                </para>
+            </glossdef>
+        </glossentry>
+
+
+
+
+PARALLEL_MAKEINST with the description ".
+
+
+
+
+
         <glossentry id='var-PATCHRESOLVE'><glossterm>PATCHRESOLVE</glossterm>
             <glossdef>
                 <para>