diff --git a/documentation/ref-manual/ref-variables.xml b/documentation/ref-manual/ref-variables.xml
index a4c5a2ca1d..bba4edf396 100644
--- a/documentation/ref-manual/ref-variables.xml
+++ b/documentation/ref-manual/ref-variables.xml
@@ -1343,6 +1343,19 @@ meta/conf/machine/include/<architecture>/arch-<architecture>.inc
             </glossdef>
         </glossentry>
 
+        <glossentry id='var-BUILD_VENDOR'><glossterm><imagedata fileref="figures/define-generic.png" />BUILD_VENDOR</glossterm>
+            <info>
+         BUILD_VENDOR[doc] = "The vendor name to use when building for the build host."
+            </info>
+            <glossdef>
+                <para>
+                    Specifies the vendor name to use when building for the
+                    build host.
+                    The default value is an empty string ("").
+                </para>
+            </glossdef>
+        </glossentry>
+
         <glossentry id='var-BUILDDIR'><glossterm><imagedata fileref="figures/define-generic.png" />BUILDDIR</glossterm>
             <info>
                 BUILDDIR[doc] = "Points to the location of the Build Directory."