diff --git a/engine/common/filesystem_engine.c b/engine/common/filesystem_engine.c
index 6d3ff03e..668a44a4 100644
--- a/engine/common/filesystem_engine.c
+++ b/engine/common/filesystem_engine.c
@@ -1,6 +1,9 @@
  /*
 filesystem.c - game filesystem based on DP fs
+Copyright (C) 2003-2006 Mathieu Olivier
+Copyright (C) 2000-2007 DarkPlaces contributors
 Copyright (C) 2007 Uncle Mike
+Copyright (C) 2015-2023 Xash3D FWGS contributors
 
 This program is free software: you can redistribute it and/or modify
 it under the terms of the GNU General Public License as published by
@@ -101,10 +104,7 @@ FS_Init
 */
 void FS_Init( void )
 {
-	qboolean		hasBaseDir = false;
-	qboolean		hasGameDir = false;
 	qboolean		caseinsensitive = true;
-	int		i;
 	string gamedir;
 
 	Cmd_AddRestrictedCommand( "fs_rescan", FS_Rescan_f, "rescan filesystem search pathes" );
diff --git a/filesystem/VFileSystem009.cpp b/filesystem/VFileSystem009.cpp
index 0974832d..e862c25d 100644
--- a/filesystem/VFileSystem009.cpp
+++ b/filesystem/VFileSystem009.cpp
@@ -1,6 +1,6 @@
 /*
 VFileSystem009.h - C++ interface for filesystem_stdio
-Copyright (C) 2022 Alibek Omarov
+Copyright (C) 2022-2023 Xash3D FWGS contributors
 
 This program is free software: you can redistribute it and/or modify
 it under the terms of the GNU General Public License as published by
diff --git a/filesystem/VFileSystem009.h b/filesystem/VFileSystem009.h
index a0b73123..e48f4b7a 100644
--- a/filesystem/VFileSystem009.h
+++ b/filesystem/VFileSystem009.h
@@ -1,6 +1,6 @@
 /*
 VFileSystem009.h - C++ interface for filesystem_stdio
-Copyright (C) 2022 Alibek Omarov
+Copyright (C) 2022-2023 Xash3D FWGS contributors
 
 This program is free software: you can redistribute it and/or modify
 it under the terms of the GNU General Public License as published by
diff --git a/filesystem/dir.c b/filesystem/dir.c
index e69aacf5..910790dc 100644
--- a/filesystem/dir.c
+++ b/filesystem/dir.c
@@ -1,6 +1,7 @@
 /*
 dir.c - caseinsensitive directory operations
 Copyright (C) 2022 Alibek Omarov, Velaron
+Copyright (C) 2023 Xash3D FWGS contributors
 
 This program is free software: you can redistribute it and/or modify
 it under the terms of the GNU General Public License as published by
diff --git a/filesystem/filesystem.c b/filesystem/filesystem.c
index 7de8c069..e27d88a9 100644
--- a/filesystem/filesystem.c
+++ b/filesystem/filesystem.c
@@ -1,6 +1,9 @@
 /*
 filesystem.c - game filesystem based on DP fs
+Copyright (C) 2003-2006 Mathieu Olivier
+Copyright (C) 2000-2007 DarkPlaces contributors
 Copyright (C) 2007 Uncle Mike
+Copyright (C) 2015-2023 Xash3D FWGS contributors
 
 This program is free software: you can redistribute it and/or modify
 it under the terms of the GNU General Public License as published by
diff --git a/filesystem/filesystem.h b/filesystem/filesystem.h
index 762c11fd..d53dfc24 100644
--- a/filesystem/filesystem.h
+++ b/filesystem/filesystem.h
@@ -1,6 +1,9 @@
 /*
 filesystem.h - engine FS
+Copyright (C) 2003-2006 Mathieu Olivier
+Copyright (C) 2000-2007 DarkPlaces contributors
 Copyright (C) 2007 Uncle Mike
+Copyright (C) 2015-2023 Xash3D FWGS contributors
 
 This program is free software: you can redistribute it and/or modify
 it under the terms of the GNU General Public License as published by
diff --git a/filesystem/filesystem_internal.h b/filesystem/filesystem_internal.h
index b60c271e..83d2fa78 100644
--- a/filesystem/filesystem_internal.h
+++ b/filesystem/filesystem_internal.h
@@ -1,6 +1,9 @@
 /*
 filesystem.h - engine FS
+Copyright (C) 2003-2006 Mathieu Olivier
+Copyright (C) 2000-2007 DarkPlaces contributors
 Copyright (C) 2007 Uncle Mike
+Copyright (C) 2015-2023 Xash3D FWGS contributors
 
 This program is free software: you can redistribute it and/or modify
 it under the terms of the GNU General Public License as published by
diff --git a/filesystem/fscallback.h b/filesystem/fscallback.h
index bebfdd29..8a22962d 100644
--- a/filesystem/fscallback.h
+++ b/filesystem/fscallback.h
@@ -1,6 +1,9 @@
 /*
 fscallback.h - common filesystem callbacks
-Copyright (C) 2022 Alibek Omarov
+Copyright (C) 2003-2006 Mathieu Olivier
+Copyright (C) 2000-2007 DarkPlaces contributors
+Copyright (C) 2007 Uncle Mike
+Copyright (C) 2015-2023 Xash3D FWGS contributors
 
 This program is free software: you can redistribute it and/or modify
 it under the terms of the GNU General Public License as published by
diff --git a/filesystem/pak.c b/filesystem/pak.c
index 4efc3191..476207ae 100644
--- a/filesystem/pak.c
+++ b/filesystem/pak.c
@@ -1,7 +1,9 @@
 /*
 pak.c - PAK support for filesystem
+Copyright (C) 2003-2006 Mathieu Olivier
+Copyright (C) 2000-2007 DarkPlaces contributors
 Copyright (C) 2007 Uncle Mike
-Copyright (C) 2022 Alibek Omarov
+Copyright (C) 2015-2023 Xash3D FWGS contributors
 
 This program is free software: you can redistribute it and/or modify
 it under the terms of the GNU General Public License as published by
diff --git a/filesystem/wad.c b/filesystem/wad.c
index da0912b5..e85ad37f 100644
--- a/filesystem/wad.c
+++ b/filesystem/wad.c
@@ -1,7 +1,9 @@
 /*
 wad.c - WAD support for filesystem
+Copyright (C) 2003-2006 Mathieu Olivier
+Copyright (C) 2000-2007 DarkPlaces contributors
 Copyright (C) 2007 Uncle Mike
-Copyright (C) 2022 Alibek Omarov
+Copyright (C) 2015-2023 Xash3D FWGS contributors
 
 This program is free software: you can redistribute it and/or modify
 it under the terms of the GNU General Public License as published by
diff --git a/filesystem/zip.c b/filesystem/zip.c
index 6bfbdb34..cfb73bd8 100644
--- a/filesystem/zip.c
+++ b/filesystem/zip.c
@@ -1,7 +1,7 @@
 /*
 zip.c - ZIP support for filesystem
 Copyright (C) 2019 Mr0maks
-Copyright (C) 2022 Alibek Omarov
+Copyright (C) 2019-2023 Xash3D FWGS contributors
 
 This program is free software: you can redistribute it and/or modify
 it under the terms of the GNU General Public License as published by