diff --git a/documentation/ref-manual/ref-variables.xml b/documentation/ref-manual/ref-variables.xml
index e6cca3ed60..44032e6409 100644
--- a/documentation/ref-manual/ref-variables.xml
+++ b/documentation/ref-manual/ref-variables.xml
@@ -7433,6 +7433,22 @@ recipes-graphics/xorg-font/font-alias_1.0.3.bb:PR = "${INC_PR}.3"
             </glossdef>
         </glossentry>
 
+        <glossentry id='var-TEST_EXPORT_DIR'><glossterm>TEST_EXPORT_DIR</glossterm>
+            <glossdef>
+                <para>
+                    The location the OpenEmbedded build system uses to export
+                    tests when the
+                    <link linkend='var-TEST_EXPORT_ONLY'><filename>TEST_EXPORT_ONLY</filename></link>
+                    variable is set to "1".
+                </para>
+
+                <para>
+                    The <filename>TEST_EXPORT_DIR</filename> variable defaults
+                    to <filename>"${TMPDIR}/testimage/${PN}"</filename>.
+                </para>
+            </glossdef>
+        </glossentry>
+
         <glossentry id='var-TEST_EXPORT_ONLY'><glossterm>TEST_EXPORT_ONLY</glossterm>
             <glossdef>
                 <para>