diff --git a/documentation/ref-manual/ref-variables.xml b/documentation/ref-manual/ref-variables.xml
index 53bc544b5b..1445f16369 100644
--- a/documentation/ref-manual/ref-variables.xml
+++ b/documentation/ref-manual/ref-variables.xml
@@ -10548,6 +10548,17 @@ recipes-graphics/xorg-font/font-alias_1.0.3.bb:PR = "${INC_PR}.3"
                     The unpacked source code resides in the
                     <filename>db-5.1.19</filename> folder.
                 </para>
+
+                <para>
+                    This next example assumes Git, which means the default
+                    directory is <filename>${WORKDIR}/git</filename>.
+                    Consequently, you must explicitly set
+                    <filename>S</filename> so the source can be located:
+                    <literallayout class='monospaced'>
+     SRC_URI = "git://path/to/repo.git"
+     S = "${WORKDIR}/git"
+                    </literallayout>
+                </para>
             </glossdef>
         </glossentry>