diff --git a/Parser/grammar1.c b/Parser/grammar1.c
index 565b2df..ed6815d 100644
--- a/Parser/grammar1.c
+++ b/Parser/grammar1.c
@@ -1,5 +1,5 @@
 /***********************************************************
-Copyright 1991 by Stichting Mathematisch Centrum, Amsterdam, The
+Copyright 1991, 1992 by Stichting Mathematisch Centrum, Amsterdam, The
 Netherlands.
 
                         All Rights Reserved