diff --git a/src/ChangeLog b/src/ChangeLog
index c866258c6fe..87b54529f2e 100644
--- a/src/ChangeLog
+++ b/src/ChangeLog
@@ -1,3 +1,7 @@
+2010-09-12  Lars Magne Ingebrigtsen  <larsi@gnus.org>
+
+	* xml.c (Fhtml_parse_string, Fxml_parse_string): Mention BASE-URL.
+
 2010-09-12  Stefan Monnier  <monnier@iro.umontreal.ca>
 
 	* fns.c (Fy_or_n_p): Move to lisp/subr.el.
diff --git a/src/xml.c b/src/xml.c
index a38795cc245..c1098b15a20 100644
--- a/src/xml.c
+++ b/src/xml.c
@@ -109,7 +109,9 @@ parse_buffer (Lisp_Object string, Lisp_Object base_url, int htmlp)
 
 DEFUN ("html-parse-string", Fhtml_parse_string, Shtml_parse_string,
        0, 2, 0,
-       doc: /* Parse the string as an HTML document and return the parse tree.*/)
+       doc: /* Parse the string as an HTML document and return the parse tree.
+If BASE-URL is non-nil, it will be used to expand relative URLs in
+the HTML document.*/)
   (Lisp_Object string, Lisp_Object base_url)
 {
   return parse_buffer (string, base_url, 1);
@@ -117,7 +119,9 @@ DEFUN ("html-parse-string", Fhtml_parse_string, Shtml_parse_string,
 
 DEFUN ("xml-parse-string", Fxml_parse_string, Sxml_parse_string,
        0, 2, 0,
-       doc: /* Parse the string as an XML document and return the parse tree.*/)
+       doc: /* Parse the string as an XML document and return the parse tree.
+If BASE-URL is non-nil, it will be used to expand relative URLs in
+the XML document.*/)
   (Lisp_Object string, Lisp_Object base_url)
 {
   return parse_buffer (string, base_url, 0);