diff --git a/libio/ChangeLog b/libio/ChangeLog
index 05ba98129df..f7293c8d425 100644
--- a/libio/ChangeLog
+++ b/libio/ChangeLog
@@ -1,5 +1,8 @@
 1998-06-29  Ulrich Drepper  <drepper@cygnus.com>
 
+	* libio.h: Rewrite __PMT change so that it works with platforms
+	defining __P but not __PMT.
+
 	* libio.h (__PMT): New macro.  Defined like __P.  Use is for
 	function pointers.