1 files changed, 3 insertions, 0 deletions
diff --git a/COPYRIGHT b/COPYRIGHT
index 1bc83d4..9863ea3 100644
--- a/COPYRIGHT
+++ b/COPYRIGHT
@@ -25,6 +25,9 @@ The copyright terms and conditions:
  2. Redistributions in binary form must reproduce the above copyright
     notice, this list of conditions and the following disclaimer in the
     documentation and/or other materials provided with the distribution.
+ 3. Neither the name of the copyright holder nor the names of its
+    contributors may be used to endorse or promote products derived
+    from this software without specific prior written permission.
 
  THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES,
  INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY