diff --git a/src/swrenderer/line/r_walldraw.cpp b/src/swrenderer/line/r_walldraw.cpp
index 30020295a..66c036a3f 100644
--- a/src/swrenderer/line/r_walldraw.cpp
+++ b/src/swrenderer/line/r_walldraw.cpp
@@ -1,24 +1,15 @@
-/*
-**  Wall drawing stuff
-**  Copyright (c) 2016 Magnus Norddahl
-**
-**  This software is provided 'as-is', without any express or implied
-**  warranty.  In no event will the authors be held liable for any damages
-**  arising from the use of this software.
-**
-**  Permission is granted to anyone to use this software for any purpose,
-**  including commercial applications, and to alter it and redistribute it
-**  freely, subject to the following restrictions:
-**
-**  1. The origin of this software must not be misrepresented; you must not
-**     claim that you wrote the original software. If you use this software
-**     in a product, an acknowledgment in the product documentation would be
-**     appreciated but is not required.
-**  2. Altered source versions must be plainly marked as such, and must not be
-**     misrepresented as being the original software.
-**  3. This notice may not be removed or altered from any source distribution.
-**
-*/
+//
+// Copyright (C) 1993-1996 by id Software, Inc.
+//
+// This source is available for distribution and/or modification
+// only under the terms of the DOOM Source Code License as
+// published by id Software. All rights reserved.
+//
+// The source is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// FITNESS FOR A PARTICULAR PURPOSE. See the DOOM Source Code License
+// for more details.
+//
 
 #include <stdlib.h>
 #include <stddef.h>