diff -r 2e9314c07146 -r ec5c3d17969f src/HOL/Real/Hyperreal/README.html
--- a/src/HOL/Real/Hyperreal/README.html	Fri Nov 27 13:13:22 1998 +0100
+++ b/src/HOL/Real/Hyperreal/README.html	Fri Nov 27 16:46:01 1998 +0100
@@ -5,7 +5,7 @@
 
 <UL>
 <LI><A HREF="Zorn.html">Zorn</A>
-Zorn's Lemma: proof based on the <A HREF="../../ZF/Zorn.html">ZF version</A>
+Zorn's Lemma: proof based on the <A HREF="../../../ZF/Zorn.html">ZF version</A>
 
 <LI><A HREF="Filter.html">Filter</A>
 Theory of Filters and Ultrafilters.