diff --git a/src/Starfighter.cpp b/src/Starfighter.cpp
index 241c60f..9316351 100644
--- a/src/Starfighter.cpp
+++ b/src/Starfighter.cpp
@@ -1,7 +1,8 @@
 /*
 Project: Starfighter
 Copyright (C) 2003 Parallel Realities
-All Rights Reserved
+Copyright (C) 2011, 2012 Guus Sliepen
+Copyright (C) 2015 Julian Marchant
 
 This program is free software; you can redistribute it and/or
 modify it under the terms of the GNU General Public License
diff --git a/src/Starfighter.h b/src/Starfighter.h
index 3a6e074..293163a 100644
--- a/src/Starfighter.h
+++ b/src/Starfighter.h
@@ -1,5 +1,7 @@
 /*
 Copyright (C) 2003 Parallel Realities
+Copyright (C) 2011 Guus Sliepen
+Copyright (C) 2015 Julian Marchant
 
 This program is free software; you can redistribute it and/or
 modify it under the terms of the GNU General Public License
diff --git a/src/ai.cpp b/src/ai.cpp
index c2088d3..10ee94f 100644
--- a/src/ai.cpp
+++ b/src/ai.cpp
@@ -1,5 +1,6 @@
 /*
 Copyright (C) 2003 Parallel Realities
+Copyright (C) 2011 Guus Sliepen
 
 This program is free software; you can redistribute it and/or
 modify it under the terms of the GNU General Public License
diff --git a/src/ai.h b/src/ai.h
index 5d02ce6..cbc6710 100644
--- a/src/ai.h
+++ b/src/ai.h
@@ -1,5 +1,6 @@
 /*
 Copyright (C) 2003 Parallel Realities
+Copyright (C) 2011 Guus Sliepen
 
 This program is free software; you can redistribute it and/or
 modify it under the terms of the GNU General Public License
diff --git a/src/aliens.cpp b/src/aliens.cpp
index c769e66..18b212a 100644
--- a/src/aliens.cpp
+++ b/src/aliens.cpp
@@ -1,5 +1,7 @@
 /*
 Copyright (C) 2003 Parallel Realities
+Copyright (C) 2011, 2012 Guus Sliepen
+Copyright (C) 2012, 2015 Julian Marchant
 
 This program is free software; you can redistribute it and/or
 modify it under the terms of the GNU General Public License
diff --git a/src/aliens.h b/src/aliens.h
index bc301d8..3125e3a 100644
--- a/src/aliens.h
+++ b/src/aliens.h
@@ -1,5 +1,6 @@
 /*
 Copyright (C) 2003 Parallel Realities
+Copyright (C) 2011 Guus Sliepen
 
 This program is free software; you can redistribute it and/or
 modify it under the terms of the GNU General Public License
diff --git a/src/audio.cpp b/src/audio.cpp
index 92fde04..699b977 100644
--- a/src/audio.cpp
+++ b/src/audio.cpp
@@ -1,5 +1,7 @@
 /*
 Copyright (C) 2003 Parallel Realities
+Copyright (C) 2011, 2012 Guus Sliepen
+Copyright (C) 2015 Julian Marchant
 
 This program is free software; you can redistribute it and/or
 modify it under the terms of the GNU General Public License
diff --git a/src/audio.h b/src/audio.h
index 5bc8c70..264f7ca 100644
--- a/src/audio.h
+++ b/src/audio.h
@@ -1,5 +1,6 @@
 /*
 Copyright (C) 2003 Parallel Realities
+Copyright (C) 2011, 2012 Guus Sliepen
 
 This program is free software; you can redistribute it and/or
 modify it under the terms of the GNU General Public License
diff --git a/src/bullets.cpp b/src/bullets.cpp
index 2572d2c..fd7f0fd 100644
--- a/src/bullets.cpp
+++ b/src/bullets.cpp
@@ -1,5 +1,7 @@
 /*
 Copyright (C) 2003 Parallel Realities
+Copyright (C) 2011, 2012 Guus Sliepen
+Copyright (C) 2015 Julian Marchant
 
 This program is free software; you can redistribute it and/or
 modify it under the terms of the GNU General Public License
diff --git a/src/bullets.h b/src/bullets.h
index f19b73e..786ee08 100644
--- a/src/bullets.h
+++ b/src/bullets.h
@@ -1,5 +1,6 @@
 /*
 Copyright (C) 2003 Parallel Realities
+Copyright (C) 2011 Guus Sliepen
 
 This program is free software; you can redistribute it and/or
 modify it under the terms of the GNU General Public License
diff --git a/src/cargo.cpp b/src/cargo.cpp
index d9a788d..dbcc886 100644
--- a/src/cargo.cpp
+++ b/src/cargo.cpp
@@ -1,5 +1,7 @@
 /*
 Copyright (C) 2003 Parallel Realities
+Copyright (C) 2011 Guus Sliepen
+Copyright (C) 2015 Julian Marchant
 
 This program is free software; you can redistribute it and/or
 modify it under the terms of the GNU General Public License
diff --git a/src/cargo.h b/src/cargo.h
index d2b9c7b..c1da79a 100644
--- a/src/cargo.h
+++ b/src/cargo.h
@@ -1,5 +1,6 @@
 /*
 Copyright (C) 2003 Parallel Realities
+Copyright (C) 2011 Guus Sliepen
 
 This program is free software; you can redistribute it and/or
 modify it under the terms of the GNU General Public License
diff --git a/src/collectable.cpp b/src/collectable.cpp
index 51314b4..051e1f8 100644
--- a/src/collectable.cpp
+++ b/src/collectable.cpp
@@ -1,5 +1,7 @@
 /*
 Copyright (C) 2003 Parallel Realities
+Copyright (C) 2011, 2012 Guus Sliepen
+Copyright (C) 2015 Julian Marchant
 
 This program is free software; you can redistribute it and/or
 modify it under the terms of the GNU General Public License
diff --git a/src/collectable.h b/src/collectable.h
index eb956f2..8fa4288 100644
--- a/src/collectable.h
+++ b/src/collectable.h
@@ -1,5 +1,6 @@
 /*
 Copyright (C) 2003 Parallel Realities
+Copyright (C) 2011 Guus Sliepen
 
 This program is free software; you can redistribute it and/or
 modify it under the terms of the GNU General Public License
diff --git a/src/comms.cpp b/src/comms.cpp
index 54e0349..a5993ae 100644
--- a/src/comms.cpp
+++ b/src/comms.cpp
@@ -1,5 +1,7 @@
 /*
 Copyright (C) 2003 Parallel Realities
+Copyright (C) 2011, 2013 Guus Sliepen
+Copyright (C) 2015 Julian Marchant
 
 This program is free software; you can redistribute it and/or
 modify it under the terms of the GNU General Public License
diff --git a/src/comms.h b/src/comms.h
index 15a7ca4..407084f 100644
--- a/src/comms.h
+++ b/src/comms.h
@@ -1,5 +1,6 @@
 /*
 Copyright (C) 2003 Parallel Realities
+Copyright (C) 2011 Guus Sliepen
 
 This program is free software; you can redistribute it and/or
 modify it under the terms of the GNU General Public License
diff --git a/src/debris.cpp b/src/debris.cpp
index 0ef8188..488e788 100644
--- a/src/debris.cpp
+++ b/src/debris.cpp
@@ -1,5 +1,7 @@
 /*
 Copyright (C) 2003 Parallel Realities
+Copyright (C) 2011, 2012 Guus Sliepen
+Copyright (C) 2015 Julian Marchant
 
 This program is free software; you can redistribute it and/or
 modify it under the terms of the GNU General Public License
diff --git a/src/debris.h b/src/debris.h
index f0b2b8b..d832038 100644
--- a/src/debris.h
+++ b/src/debris.h
@@ -1,5 +1,6 @@
 /*
 Copyright (C) 2003 Parallel Realities
+Copyright (C) 2011 Guus Sliepen
 
 This program is free software; you can redistribute it and/or
 modify it under the terms of the GNU General Public License
diff --git a/src/defs.h b/src/defs.h
index 72e6f05..d63710d 100644
--- a/src/defs.h
+++ b/src/defs.h
@@ -1,5 +1,7 @@
 /*
 Copyright (C) 2003 Parallel Realities
+Copyright (C) 2011, 2012 Guus Sliepen
+Copyright (C) 2012, 2015 Julian Marchant
 
 This program is free software; you can redistribute it and/or
 modify it under the terms of the GNU General Public License
diff --git a/src/events.cpp b/src/events.cpp
index 9b594dc..5bd9783 100644
--- a/src/events.cpp
+++ b/src/events.cpp
@@ -1,5 +1,6 @@
 /*
 Copyright (C) 2003 Parallel Realities
+Copyright (C) 2011, 2013 Guus Sliepen
 
 This program is free software; you can redistribute it and/or
 modify it under the terms of the GNU General Public License
diff --git a/src/events.h b/src/events.h
index 12673db..093d502 100644
--- a/src/events.h
+++ b/src/events.h
@@ -1,5 +1,6 @@
 /*
 Copyright (C) 2003 Parallel Realities
+Copyright (C) 2011 Guus Sliepen
 
 This program is free software; you can redistribute it and/or
 modify it under the terms of the GNU General Public License
diff --git a/src/explosions.cpp b/src/explosions.cpp
index 8686816..f4a8017 100644
--- a/src/explosions.cpp
+++ b/src/explosions.cpp
@@ -1,5 +1,7 @@
 /*
 Copyright (C) 2003 Parallel Realities
+Copyright (C) 2011 Guus Sliepen
+Copyright (C) 2015 Julian Marchant
 
 This program is free software; you can redistribute it and/or
 modify it under the terms of the GNU General Public License
diff --git a/src/explosions.h b/src/explosions.h
index 417fa93..54ab20e 100644
--- a/src/explosions.h
+++ b/src/explosions.h
@@ -1,5 +1,6 @@
 /*
 Copyright (C) 2003 Parallel Realities
+Copyright (C) 2011 Guus Sliepen
 
 This program is free software; you can redistribute it and/or
 modify it under the terms of the GNU General Public License
diff --git a/src/game.cpp b/src/game.cpp
index 70bd7d6..4d5d93d 100644
--- a/src/game.cpp
+++ b/src/game.cpp
@@ -1,5 +1,7 @@
 /*
 Copyright (C) 2003 Parallel Realities
+Copyright (C) 2011, 2012, 2013 Guus Sliepen
+Copyright (C) 2012, 2014, 2015 Julian Marchant
 
 This program is free software; you can redistribute it and/or
 modify it under the terms of the GNU General Public License
diff --git a/src/game.h b/src/game.h
index 74e8493..ec38b91 100644
--- a/src/game.h
+++ b/src/game.h
@@ -1,5 +1,6 @@
 /*
 Copyright (C) 2003 Parallel Realities
+Copyright (C) 2011 Guus Sliepen
 
 This program is free software; you can redistribute it and/or
 modify it under the terms of the GNU General Public License
diff --git a/src/globals.cpp b/src/globals.cpp
index 32f3dbd..144f57e 100644
--- a/src/globals.cpp
+++ b/src/globals.cpp
@@ -1,5 +1,7 @@
 /*
 Copyright (C) 2003 Parallel Realities
+Copyright (C) 2011, 2012, 2013 Guus Sliepen
+Copyright (C) 2015 Julian Marchant
 
 This program is free software; you can redistribute it and/or
 modify it under the terms of the GNU General Public License
diff --git a/src/globals.h b/src/globals.h
index 4e08481..4c3af2e 100644
--- a/src/globals.h
+++ b/src/globals.h
@@ -1,5 +1,6 @@
 /*
 Copyright (C) 2003 Parallel Realities
+Copyright (C) 2011 Guus Sliepen
 
 This program is free software; you can redistribute it and/or
 modify it under the terms of the GNU General Public License
diff --git a/src/graphics.cpp b/src/graphics.cpp
index be71e48..afd57d1 100644
--- a/src/graphics.cpp
+++ b/src/graphics.cpp
@@ -1,5 +1,7 @@
 /*
 Copyright (C) 2003 Parallel Realities
+Copyright (C) 2011, 2012, 2013 Guus Sliepen
+Copyright (C) 2015 Julian Marchant
 
 This program is free software; you can redistribute it and/or
 modify it under the terms of the GNU General Public License
diff --git a/src/graphics.h b/src/graphics.h
index c67fc0e..965665d 100644
--- a/src/graphics.h
+++ b/src/graphics.h
@@ -1,5 +1,6 @@
 /*
 Copyright (C) 2003 Parallel Realities
+Copyright (C) 2011 Guus Sliepen
 
 This program is free software; you can redistribute it and/or
 modify it under the terms of the GNU General Public License
diff --git a/src/init.cpp b/src/init.cpp
index 833f6a9..a5d9392 100644
--- a/src/init.cpp
+++ b/src/init.cpp
@@ -1,5 +1,7 @@
 /*
 Copyright (C) 2003 Parallel Realities
+Copyright (C) 2011, 2012, 2013 Guus Sliepen
+Copyright (C) 2012, 2015 Julian Marchant
 
 This program is free software; you can redistribute it and/or
 modify it under the terms of the GNU General Public License
diff --git a/src/init.h b/src/init.h
index b16e87b..c18093c 100644
--- a/src/init.h
+++ b/src/init.h
@@ -1,5 +1,6 @@
 /*
 Copyright (C) 2003 Parallel Realities
+Copyright (C) 2011 Guus Sliepen
 
 This program is free software; you can redistribute it and/or
 modify it under the terms of the GNU General Public License
diff --git a/src/intermission.cpp b/src/intermission.cpp
index eddcf37..2387049 100644
--- a/src/intermission.cpp
+++ b/src/intermission.cpp
@@ -1,5 +1,7 @@
 /*
 Copyright (C) 2003 Parallel Realities
+Copyright (C) 2011, 2012, 2013 Guus Sliepen
+Copyright (C) 2012, 2015 Julian Marchant
 
 This program is free software; you can redistribute it and/or
 modify it under the terms of the GNU General Public License
diff --git a/src/intermission.h b/src/intermission.h
index b4bc077..8d893a5 100644
--- a/src/intermission.h
+++ b/src/intermission.h
@@ -1,5 +1,6 @@
 /*
 Copyright (C) 2003 Parallel Realities
+Copyright (C) 2011 Guus Sliepen
 
 This program is free software; you can redistribute it and/or
 modify it under the terms of the GNU General Public License
diff --git a/src/loadSave.cpp b/src/loadSave.cpp
index 2818daa..40c0975 100644
--- a/src/loadSave.cpp
+++ b/src/loadSave.cpp
@@ -1,5 +1,7 @@
 /*
 Copyright (C) 2003 Parallel Realities
+Copyright (C) 2011, 2012, 2013 Guus Sliepen
+Copyright (C) 2015 Julian Marchant
 
 This program is free software; you can redistribute it and/or
 modify it under the terms of the GNU General Public License
diff --git a/src/loadSave.h b/src/loadSave.h
index 80e85dd..847dbd0 100644
--- a/src/loadSave.h
+++ b/src/loadSave.h
@@ -1,5 +1,6 @@
 /*
 Copyright (C) 2003 Parallel Realities
+Copyright (C) 2011 Guus Sliepen
 
 This program is free software; you can redistribute it and/or
 modify it under the terms of the GNU General Public License
diff --git a/src/math.h b/src/math.h
index 90c30fd..4f791da 100644
--- a/src/math.h
+++ b/src/math.h
@@ -1,5 +1,6 @@
 /*
 Copyright (C) 2003 Parallel Realities
+Copyright (C) 2011 Guus Sliepen
 
 This program is free software; you can redistribute it and/or
 modify it under the terms of the GNU General Public License
diff --git a/src/messages.cpp b/src/messages.cpp
index 1e66f4f..250ed26 100644
--- a/src/messages.cpp
+++ b/src/messages.cpp
@@ -1,5 +1,6 @@
 /*
 Copyright (C) 2003 Parallel Realities
+Copyright (C) 2011, 2012 Guus Sliepen
 
 This program is free software; you can redistribute it and/or
 modify it under the terms of the GNU General Public License
diff --git a/src/messages.h b/src/messages.h
index cc9b150..b5f4873 100644
--- a/src/messages.h
+++ b/src/messages.h
@@ -1,5 +1,6 @@
 /*
 Copyright (C) 2003 Parallel Realities
+Copyright (C) 2011 Guus Sliepen
 
 This program is free software; you can redistribute it and/or
 modify it under the terms of the GNU General Public License
diff --git a/src/misc.cpp b/src/misc.cpp
index a624162..dabf265 100644
--- a/src/misc.cpp
+++ b/src/misc.cpp
@@ -1,5 +1,7 @@
 /*
 Copyright (C) 2003 Parallel Realities
+Copyright (C) 2011, 2012, 2013 Guus Sliepen
+Copyright (C) 2015 Julian Marchant
 
 This program is free software; you can redistribute it and/or
 modify it under the terms of the GNU General Public License
diff --git a/src/misc.h b/src/misc.h
index 88e584d..7e4c14b 100644
--- a/src/misc.h
+++ b/src/misc.h
@@ -1,5 +1,6 @@
 /*
 Copyright (C) 2003 Parallel Realities
+Copyright (C) 2011 Guus Sliepen
 
 This program is free software; you can redistribute it and/or
 modify it under the terms of the GNU General Public License
diff --git a/src/missions.cpp b/src/missions.cpp
index 6cb682d..27d4ff4 100644
--- a/src/missions.cpp
+++ b/src/missions.cpp
@@ -1,5 +1,7 @@
 /*
 Copyright (C) 2003 Parallel Realities
+Copyright (C) 2011, 2012, 2013 Guus Sliepen
+Copyright (C) 2012, 2015 Julian Marchant
 
 This program is free software; you can redistribute it and/or
 modify it under the terms of the GNU General Public License
diff --git a/src/missions.h b/src/missions.h
index 147e785..9ea2403 100644
--- a/src/missions.h
+++ b/src/missions.h
@@ -1,5 +1,6 @@
 /*
 Copyright (C) 2003 Parallel Realities
+Copyright (C) 2011 Guus Sliepen
 
 This program is free software; you can redistribute it and/or
 modify it under the terms of the GNU General Public License
diff --git a/src/player.cpp b/src/player.cpp
index 14d2a99..5818aa3 100644
--- a/src/player.cpp
+++ b/src/player.cpp
@@ -1,5 +1,7 @@
 /*
 Copyright (C) 2003 Parallel Realities
+Copyright (C) 2011, 2012, 2013 Guus Sliepen
+Copyright (C) 2012, 2015 Julian Marchant
 
 This program is free software; you can redistribute it and/or
 modify it under the terms of the GNU General Public License
diff --git a/src/player.h b/src/player.h
index fc3649d..fee5052 100644
--- a/src/player.h
+++ b/src/player.h
@@ -1,5 +1,6 @@
 /*
 Copyright (C) 2003 Parallel Realities
+Copyright (C) 2011 Guus Sliepen
 
 This program is free software; you can redistribute it and/or
 modify it under the terms of the GNU General Public License
diff --git a/src/resources.cpp b/src/resources.cpp
index 7d4947b..513e99e 100644
--- a/src/resources.cpp
+++ b/src/resources.cpp
@@ -1,5 +1,7 @@
 /*
 Copyright (C) 2003 Parallel Realities
+Copyright (C) 2011, 2012, 2013 Guus Sliepen
+Copyright (C) 2015 Julian Marchant
 
 This program is free software; you can redistribute it and/or
 modify it under the terms of the GNU General Public License
diff --git a/src/resources.h b/src/resources.h
index 0c2225e..779b4a4 100644
--- a/src/resources.h
+++ b/src/resources.h
@@ -1,5 +1,6 @@
 /*
 Copyright (C) 2003 Parallel Realities
+Copyright (C) 2011 Guus Sliepen
 
 This program is free software; you can redistribute it and/or
 modify it under the terms of the GNU General Public License
diff --git a/src/script.cpp b/src/script.cpp
index b2c7f2d..64d39f7 100644
--- a/src/script.cpp
+++ b/src/script.cpp
@@ -1,5 +1,7 @@
 /*
 Copyright (C) 2003 Parallel Realities
+Copyright (C) 2011, 2012, 2013 Guus Sliepen
+Copyright (C) 2012, 2015 Julian Marchant
 
 This program is free software; you can redistribute it and/or
 modify it under the terms of the GNU General Public License
diff --git a/src/script.h b/src/script.h
index 1d3df30..846aca4 100644
--- a/src/script.h
+++ b/src/script.h
@@ -1,5 +1,6 @@
 /*
 Copyright (C) 2003 Parallel Realities
+Copyright (C) 2011 Guus Sliepen
 
 This program is free software; you can redistribute it and/or
 modify it under the terms of the GNU General Public License
diff --git a/src/shop.cpp b/src/shop.cpp
index cd52418..effc09e 100644
--- a/src/shop.cpp
+++ b/src/shop.cpp
@@ -1,5 +1,7 @@
 /*
 Copyright (C) 2003 Parallel Realities
+Copyright (C) 2011, 2012, 2013 Guus Sliepen
+Copyright (C) 2015 Julian Marchant
 
 This program is free software; you can redistribute it and/or
 modify it under the terms of the GNU General Public License
diff --git a/src/shop.h b/src/shop.h
index bf0a658..a4399e2 100644
--- a/src/shop.h
+++ b/src/shop.h
@@ -1,5 +1,6 @@
 /*
 Copyright (C) 2003 Parallel Realities
+Copyright (C) 2011 Guus Sliepen
 
 This program is free software; you can redistribute it and/or
 modify it under the terms of the GNU General Public License
diff --git a/src/structs.h b/src/structs.h
index 228d22f..a6d35a1 100644
--- a/src/structs.h
+++ b/src/structs.h
@@ -1,5 +1,7 @@
 /*
 Copyright (C) 2003 Parallel Realities
+Copyright (C) 2011, 2012, 2013 Guus Sliepen
+Copyright (C) 2015 Julian Marchant
 
 This program is free software; you can redistribute it and/or
 modify it under the terms of the GNU General Public License
diff --git a/src/title.cpp b/src/title.cpp
index adcf30d..23bc44e 100644
--- a/src/title.cpp
+++ b/src/title.cpp
@@ -1,5 +1,7 @@
 /*
 Copyright (C) 2003 Parallel Realities
+Copyright (C) 2011, 2012, 2013 Guus Sliepen
+Copyright (C) 2012, 2015 Julian Marchant
 
 This program is free software; you can redistribute it and/or
 modify it under the terms of the GNU General Public License
diff --git a/src/title.h b/src/title.h
index 3ad23fc..5d51de7 100644
--- a/src/title.h
+++ b/src/title.h
@@ -1,5 +1,7 @@
 /*
 Copyright (C) 2003 Parallel Realities
+Copyright (C) 2011 Guus Sliepen
+Copyright (C) 2015 Julian Marchant
 
 This program is free software; you can redistribute it and/or
 modify it under the terms of the GNU General Public License
diff --git a/src/weapons.cpp b/src/weapons.cpp
index c962e03..58446a3 100644
--- a/src/weapons.cpp
+++ b/src/weapons.cpp
@@ -1,5 +1,6 @@
 /*
 Copyright (C) 2003 Parallel Realities
+Copyright (C) 2011, 2013 Guus Sliepen
 
 This program is free software; you can redistribute it and/or
 modify it under the terms of the GNU General Public License
diff --git a/src/weapons.h b/src/weapons.h
index 4b63e0d..2483a1f 100644
--- a/src/weapons.h
+++ b/src/weapons.h
@@ -1,5 +1,6 @@
 /*
 Copyright (C) 2003 Parallel Realities
+Copyright (C) 2011 Guus Sliepen
 
 This program is free software; you can redistribute it and/or
 modify it under the terms of the GNU General Public License