diff --git a/ChangeLog b/ChangeLog
index 629606d2..3cbc9e87 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,10 @@
+2005-01-21  Paul Eggert  <eggert@cs.ucla.edu>
+
+	* data/yacc.c (YYCOPY, yystpcpy, yyparse): Remove "register"
+	keyword; it's not needed with modern compilers, and it doesn't
+	affect correctness with older compilers.  Suggested by
+	twlevo@xs4all.nl.
+
 2005-01-17  Paul Eggert  <eggert@cs.ucla.edu>
 
 	* data/glr.c (yyuserAction): Add "default: break;" case to pacify