diff --git a/specifications/xslt-40/src/xslt.xml b/specifications/xslt-40/src/xslt.xml
index d33a033c0..bb24ec536 100644
--- a/specifications/xslt-40/src/xslt.xml
+++ b/specifications/xslt-40/src/xslt.xml
@@ -15855,9 +15855,9 @@ and <code>version="1.0"</code> otherwise.</p>
                   </tr>
                   <tr>
                      <td rowspan="1" colspan="1">err:stack-trace</td>
-                     <td rowspan="1" colspan="1">fn() as xs:string?</td>
-                     <td rowspan="1" colspan="1">A zero-arity function which, when called, returns
-                        an <termref def="dt-implementation-dependent"/> string containing diagnostic
+                     <td rowspan="1" colspan="1">xs:string?</td>
+                     <td rowspan="1" colspan="1">An <termref def="dt-implementation-dependent"/> 
+                        string containing diagnostic
                         information about the state of execution at the point where the error occured, 
                         or an empty sequence if no stack trace is available.</td>
                   </tr>