diff --git a/reference/xsl/xsltprocessor/getparameter.xml b/reference/xsl/xsltprocessor/getparameter.xml
index 3c91e224fb..1f365a86e2 100644
--- a/reference/xsl/xsltprocessor/getparameter.xml
+++ b/reference/xsl/xsltprocessor/getparameter.xml
@@ -44,7 +44,7 @@
  <refsect1 role="returnvalues">
   &reftitle.returnvalues;
   <para>
-   The value of the parameter or &null; if it's not set.
+   The value of the parameter (as a string), or &false; if it's not set.
   </para>
  </refsect1>
  <refsect1 role="seealso">