diff --git a/src/bdf/bdf.h b/src/bdf/bdf.h
index 665649a..4018756 100644
--- a/src/bdf/bdf.h
+++ b/src/bdf/bdf.h
@@ -1,6 +1,6 @@
 /*
  * Copyright 2000 Computing Research Labs, New Mexico State University
- * Copyright 2001-2018 Francesco Zappa Nardelli
+ * Copyright 2001-2004, 2011 Francesco Zappa Nardelli
  *
  * Permission is hereby granted, free of charge, to any person obtaining a
  * copy of this software and associated documentation files (the "Software"),
diff --git a/src/bdf/bdfdrivr.c b/src/bdf/bdfdrivr.c
index 3abd158..fee6110 100644
--- a/src/bdf/bdfdrivr.c
+++ b/src/bdf/bdfdrivr.c
@@ -2,7 +2,8 @@
 
     FreeType font driver for bdf files
 
-    Copyright (C) 2001-2018 Francesco Zappa Nardelli
+    Copyright (C) 2001-2008, 2011, 2013, 2014 by
+    Francesco Zappa Nardelli
 
 Permission is hereby granted, free of charge, to any person obtaining a copy
 of this software and associated documentation files (the "Software"), to deal
diff --git a/src/bdf/bdflib.c b/src/bdf/bdflib.c
index 1fbb989..8e73f9f 100644
--- a/src/bdf/bdflib.c
+++ b/src/bdf/bdflib.c
@@ -1,6 +1,6 @@
 /*
  * Copyright 2000 Computing Research Labs, New Mexico State University
- * Copyright 2001-2018
+ * Copyright 2001-2014
  *   Francesco Zappa Nardelli
  *
  * Permission is hereby granted, free of charge, to any person obtaining a