diff --git a/mach/mantra/int/copyright b/mach/mantra/int/copyright
index 7328f6bc..850f114c 100644
--- a/mach/mantra/int/copyright
+++ b/mach/mantra/int/copyright
@@ -1,4 +1,4 @@
-! (c) copyright 1980 by the Vrije Universiteit, Amsterdam, The Netherlands.
+! (c) copyright 1984 by the Vrije Universiteit, Amsterdam, The Netherlands.
 ! Explicit permission is hereby granted to universities to use or duplicate
 ! this program for educational or research purposes.  All other use or dup-
 ! lication  by universities,  and all use or duplication by other organiza-