diff --git a/reactos/include/reactos/idl/lsa.idl b/reactos/include/reactos/idl/lsa.idl
index 551272b6c96..1f02f1bf651 100644
--- a/reactos/include/reactos/idl/lsa.idl
+++ b/reactos/include/reactos/idl/lsa.idl
@@ -5,7 +5,6 @@
 #include "include/reactos/idl/wtypes.idl"
 
 #define LSA_HANDLE unsigned long
-#define NTSTATUS unsigned int
 
 [
   uuid(12345778-1234-abcd-ef00-0123456789ab),
diff --git a/reactos/include/reactos/idl/pnp.idl b/reactos/include/reactos/idl/pnp.idl
index 90e8b978ed1..5f04232b656 100644
--- a/reactos/include/reactos/idl/pnp.idl
+++ b/reactos/include/reactos/idl/pnp.idl
@@ -2,12 +2,9 @@
  * Plug and Play Manager RPC interface definition
  */
 
-#define WORD unsigned short
-#define DWORD unsigned long
-#define ULONG unsigned long
+#include "include/reactos/idl/wtypes.idl"
+
 #define CONFIGRET unsigned long
-#define BOOL unsigned long
-#define PBOOL unsigned long *
 
 [
   uuid (809F4e40-A03D-11CE-8F69-08003E30051B),
diff --git a/reactos/include/reactos/idl/wtypes.idl b/reactos/include/reactos/idl/wtypes.idl
index b4e534b0bcf..4852b796cea 100644
--- a/reactos/include/reactos/idl/wtypes.idl
+++ b/reactos/include/reactos/idl/wtypes.idl
@@ -1,5 +1,7 @@
 #define BYTE unsigned char
+#define WORD unsigned short
 #define DWORD unsigned long
+#define ULONG unsigned long
 #define BOOL unsigned long
 #define LPSTR char*
 #define LPCSTR char*
@@ -7,3 +9,6 @@
 #define LPCWSTR wchar_t*
 #define LPBYTE unsigned char*
 #define LPDWORD unsigned long*
+#define PBOOL unsigned long*
+
+#define NTSTATUS long
\ No newline at end of file