1 files changed, 4 insertions, 0 deletions
diff --git a/signal.c b/signal.c
index 9be0d48ee5..d32bd1f02b 100644
--- a/signal.c
+++ b/signal.c
@@ -6,6 +6,10 @@
   $Date$
   created at: Tue Dec 20 10:13:44 JST 1994
 
+  Copyright (C) 1993-2000 Yukihiro Matsumoto
+  Copyright (C) 2000  Network Applied Communication Laboratory, Inc.
+  Copyright (C) 2000  Information-technology Promotion Agancy, Japan
+
 ************************************************/
 
 #include "ruby.h"