diff --git a/documentation/ref-manual/ref-variables.xml b/documentation/ref-manual/ref-variables.xml
index 4fb1f64646..d55bccdc6f 100644
--- a/documentation/ref-manual/ref-variables.xml
+++ b/documentation/ref-manual/ref-variables.xml
@@ -6241,6 +6241,22 @@ recipes-graphics/xorg-font/font-alias_1.0.3.bb:PR = "${INC_PR}.3"
             </glossdef>
         </glossentry>
 
+        <glossentry id='var-INSTALL_TIMEZONE_FILE'><glossterm>INSTALL_TIMEZONE_FILE</glossterm>
+            <info>
+                INSTALL_TIMEZONE_FILE[doc] = "Enables installation of the /etc/timezone file."
+            </info>
+            <glossdef>
+                <para role="glossdeffirst">
+<!--                <para role="glossdeffirst"><imagedata fileref="figures/define-generic.png" /> -->
+                    By default, the <filename>tzdata</filename> recipe packages
+                    an <filename>/etc/timezone</filename> file.
+                    Set the <filename>INSTALL_TIMEZONE_FILE</filename>
+                    variable to "0" at the configuration level to disable this
+                    behavior.
+                </para>
+            </glossdef>
+        </glossentry>
+
         <glossentry id='var-IPK_FEED_URIS'><glossterm>IPK_FEED_URIS</glossterm>
             <info>
                 IPK_FEED_URIS[doc] = "List of ipkg feed records to put into generated image."