diff --git a/sdk/include/psdk/winbase.h b/sdk/include/psdk/winbase.h
index cfc2f494dcf..9128d36d752 100644
--- a/sdk/include/psdk/winbase.h
+++ b/sdk/include/psdk/winbase.h
@@ -780,7 +780,9 @@ typedef struct _DEBUG_EVENT {
 } DEBUG_EVENT,*LPDEBUG_EVENT;
 
 #ifndef MIDL_PASS
+typedef PCONTEXT LPCONTEXT;
 typedef PEXCEPTION_RECORD LPEXCEPTION_RECORD;
+typedef PEXCEPTION_POINTERS LPEXCEPTION_POINTERS;
 #endif
 
 typedef struct _OVERLAPPED {
diff --git a/sdk/include/xdk/winnt_old.h b/sdk/include/xdk/winnt_old.h
index 500cea982d3..e935859d952 100644
--- a/sdk/include/xdk/winnt_old.h
+++ b/sdk/include/xdk/winnt_old.h
@@ -2097,7 +2097,7 @@ typedef struct _CONTEXT
 #else
 #error "undefined processor type"
 #endif
-typedef CONTEXT *PCONTEXT,*LPCONTEXT;
+typedef CONTEXT *PCONTEXT;
 
 #define EXCEPTION_MAXIMUM_PARAMETERS 15
 #define EXCEPTION_NONCONTINUABLE  0x01
@@ -2145,7 +2145,7 @@ typedef struct _EXCEPTION_RECORD64 {
 typedef struct _EXCEPTION_POINTERS {
   PEXCEPTION_RECORD ExceptionRecord;
   PCONTEXT ContextRecord;
-} EXCEPTION_POINTERS,*PEXCEPTION_POINTERS, *LPEXCEPTION_POINTERS;
+} EXCEPTION_POINTERS, *PEXCEPTION_POINTERS;
 
 typedef struct _SECURITY_ATTRIBUTES {
     DWORD nLength;