diff --git a/COPYING b/COPYING.adoc
similarity index 89%
rename from COPYING
rename to COPYING.adoc
index 86317481..81247b47 100644
--- a/COPYING
+++ b/COPYING.adoc
@@ -1,4 +1,4 @@
-Copyright (c) 2001-2017
+Copyright © 2001-2017
 Contributors to the Freedoom project.  All rights reserved.
 
 Redistribution and use in source and binary forms, with or without
@@ -14,8 +14,8 @@ met:
     contributors may be used to endorse or promote products derived from
     this software without specific prior written permission.
 
-THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
-IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS “AS
+IS” AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
 TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
 PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER
 OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
@@ -26,5 +26,5 @@ LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
 NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
 SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 
-For a list of contributors to the freedoom project, see the file
+For a list of contributors to the Freedoom project, see the file
 CREDITS.