Index: ddk/wdm.h
===================================================================
--- include/ddk/wdm.h	(revision 59325)
+++ include/ddk/wdm.h	(working copy)
@@ -2113,7 +2113,7 @@
 typedef ULONG SECURITY_INFORMATION, *PSECURITY_INFORMATION;
 typedef ULONG ACCESS_MASK, *PACCESS_MASK;
 typedef PVOID PACCESS_TOKEN;
-typedef PVOID PSID;
+typedef struct _SID *PSID;
 
 #define DELETE                           0x00010000L
 #define READ_CONTROL                     0x00020000L
Index: psdk/winnt.h
===================================================================
--- include/psdk/winnt.h	(revision 59325)
+++ include/psdk/winnt.h	(working copy)
@@ -3454,7 +3454,7 @@
   BYTE Value[6];
 } SID_IDENTIFIER_AUTHORITY,*PSID_IDENTIFIER_AUTHORITY,*LPSID_IDENTIFIER_AUTHORITY;
 
-typedef PVOID PSID;
+typedef struct _SID *PSID;
 
 typedef struct _SID {
   BYTE Revision;