diff --git a/reactos/include/psdk/wtsapi32.h b/reactos/include/psdk/wtsapi32.h
index f4bab56635e..d00a699aacf 100644
--- a/reactos/include/psdk/wtsapi32.h
+++ b/reactos/include/psdk/wtsapi32.h
@@ -135,6 +135,8 @@ typedef struct _WTS_SERVER_INFOW
 DECL_WINELIB_TYPE_AW(WTS_SERVER_INFO)
 DECL_WINELIB_TYPE_AW(PWTS_SERVER_INFO)
 
+#define WTS_CURRENT_SERVER_HANDLE ((HANDLE)NULL)
+
 void WINAPI WTSCloseServer(HANDLE);
 BOOL WINAPI WTSConnectSessionA(ULONG, ULONG, PSTR, BOOL);
 BOOL WINAPI WTSConnectSessionW(ULONG, ULONG, PWSTR, BOOL);