diff --git a/reactos/include/psdk/ntdef.h b/reactos/include/psdk/ntdef.h
index 4d6ed252d5f..d0a0760f372 100644
--- a/reactos/include/psdk/ntdef.h
+++ b/reactos/include/psdk/ntdef.h
@@ -1,3 +1,23 @@
+/*
+ * ntdef.h
+ *
+ * This file is part of the ReactOS PSDK package.
+ *
+ * Contributors:
+ *   Created by Casper S. Hornstrup <chorns@users.sourceforge.net>
+ *
+ * THIS SOFTWARE IS NOT COPYRIGHTED
+ *
+ * This source code is offered for use in the public domain. You may
+ * use, modify or distribute it freely.
+ *
+ * This code is distributed in the hope that it will be useful but
+ * WITHOUT ANY WARRANTY. ALL WARRANTIES, EXPRESS OR IMPLIED ARE HEREBY
+ * DISCLAIMED. This includes but is not limited to warranties of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
+ *
+ */
+
 #ifndef _NTDEF_
 #define _NTDEF_
 
diff --git a/reactos/include/reactos/mc/bugcodes.mc b/reactos/include/reactos/mc/bugcodes.mc
index 38232ee3a56..d2826d16eb4 100644
--- a/reactos/include/reactos/mc/bugcodes.mc
+++ b/reactos/include/reactos/mc/bugcodes.mc
@@ -1,3 +1,8 @@
+;
+; Created by : Marc Piulachs.
+; This source code is offered for use in the public domain.
+;
+
 ;
 ; ntoskrnl.exe bug codes 
 ;