diff --git a/ChangeLog b/ChangeLog
index ddee4aa6..30d4ba54 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -2,6 +2,9 @@
 
 	* NEWS: Version 2.0b.
 
+	* data/glr.c (YYOPTIONAL_LOC): Define even if it's not a recent
+	version of GCC, since the macro is used with non-GCC compilers.
+
 	Fix core dump reported by Pablo De Napoli in
 	<http://lists.gnu.org/archive/html/bug-bison/2005-07/msg00053.html>.
 	* tests/regression.at (Invalid inputs with {}): New test.