diff --git a/COPYING b/COPYING
index cd459b6ea..33a5519be 100644
--- a/COPYING
+++ b/COPYING
@@ -921,29 +921,6 @@ or other dealings in this Software without prior written authorization
 from Kaleb S. KEITHLEY
 
 
-SPDX-License-Identifier: HPND-sell-variant
-
-Copyright (c) 1997 Matthieu Herrb
-
-Permission to use, copy, modify, distribute, and sell this software and its
-documentation for any purpose is hereby granted without fee, provided that
-the above copyright notice appear in all copies and that both that
-copyright notice and this permission notice appear in supporting
-documentation, and that the name of Matthieu Herrb not be used in
-advertising or publicity pertaining to distribution of the software without
-specific, written prior permission.  Matthieu Herrb makes no
-representations about the suitability of this software for any purpose.
- It is provided "as is" without express or implied warranty.
-
-MATTHIEU HERRB DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
-INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
-EVENT SHALL MATTHIEU HERRB BE LIABLE FOR ANY SPECIAL, INDIRECT OR
-CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,
-DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
-TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
-PERFORMANCE OF THIS SOFTWARE.
-
-
 SPDX-License-Identifier: X11
 
 Copyright 2004, Egbert Eich