diff --git a/libguile/ChangeLog b/libguile/ChangeLog
index b08df7156..1c6d6a93a 100644
--- a/libguile/ChangeLog
+++ b/libguile/ChangeLog
@@ -1,9 +1,10 @@
 2003-04-16  Rob Browning  <rlb@defaultvalue.org>
 
-	* gc_os_dep.c Added patch for UnixWare and OpenUNIX support.
+	* gc_os_dep.c: Added patch for UnixWare and OpenUNIX support.
 	Thanks to Boyd Gerber.
-	Added check for __arm__ in addition to arm for LINUX.  Thanks to
-	James Treacy for reporting the problem.
+	Added check for __arm__ in addition to arm for LINUX and copied
+	__s390__ defines from upstream libgc. Thanks to James Treacy for
+	reporting the problems.
 
 2003-04-15  Mikael Djurfeldt  <djurfeldt@nada.kth.se>