diff --git a/include/winnt.h b/include/winnt.h
index 93524cd..c735316 100644
--- a/include/winnt.h
+++ b/include/winnt.h
@@ -7,6 +7,7 @@
 #ifndef __WINE_WINNT_H
 #define __WINE_WINNT_H
 
+#include "basetsd.h"
 #include "windef.h"
 
 #ifndef RC_INVOKED
@@ -142,6 +143,17 @@
 typedef BYTE     BOOLEAN;
 typedef BOOLEAN *PBOOLEAN;
 
+#ifndef _DWORDLONG_
+#define _DWORDLONG_
+typedef __uint64 DWORDLONG, *PDWORDLONG;
+#endif
+
+#ifndef _ULONGLONG_
+#define _ULONGLONG_
+typedef __int64 LONGLONG, *PLONGLONG;
+typedef __uint64 ULONGLONG, *PULONGLONG;
+#endif
+
 typedef struct _LIST_ENTRY {
   struct _LIST_ENTRY *Flink;
   struct _LIST_ENTRY *Blink;