diff --git a/util/copyrights b/util/copyrights
index 7a2f1aff6f..a41c50e251 100644
--- a/util/copyrights
+++ b/util/copyrights
@@ -3053,7 +3053,6 @@
 ./doc/arm/Bv9ARM.ch10.html			X	2005,2006,2007,2008,2009,2010,2011,2012,2013,2014,2015,2016,2017,2018
 ./doc/arm/Bv9ARM.ch11.html			X	2015,2016,2017,2018
 ./doc/arm/Bv9ARM.ch12.html			X	2015,2016,2017,2018
-./doc/arm/Bv9ARM.ch13.html			X	2015,2016,2017
 ./doc/arm/Bv9ARM.conf				X	2015
 ./doc/arm/Bv9ARM.html				X	2000,2001,2002,2003,2004,2005,2006,2007,2008,2009,2010,2011,2012,2013,2014,2015,2016,2017,2018
 ./doc/arm/Bv9ARM.pdf				X	2007,2008,2009,2010,2011,2012,2013,2014,2015,2016,2017,2018