diff --git a/reactos/include/psdk/winnt.h b/reactos/include/psdk/winnt.h
index 1b4cf1bfc3d..7ec80049040 100644
--- a/reactos/include/psdk/winnt.h
+++ b/reactos/include/psdk/winnt.h
@@ -486,6 +486,7 @@ typedef DWORD FLONG;
 #define PROCESS_SET_INFORMATION	512
 #define PROCESS_QUERY_INFORMATION	1024
 #define PROCESS_SUSPEND_RESUME	2048
+#define PROCESS_QUERY_LIMITED_INFORMATION 0x1000
 #define PROCESS_ALL_ACCESS (STANDARD_RIGHTS_REQUIRED|SYNCHRONIZE|0xFFF)
 #endif
 #define PROCESS_DUP_HANDLE	64
@@ -1164,12 +1165,17 @@ typedef enum
 #define HEAP_PSEUDO_TAG_FLAG 0x8000
 #define HEAP_TAG_SHIFT 16
 #define HEAP_MAKE_TAG_FLAGS(b,o) ((DWORD)((b)+(o)<<16)))
+
 #define KEY_QUERY_VALUE 1
 #define KEY_SET_VALUE 2
 #define KEY_CREATE_SUB_KEY 4
 #define KEY_ENUMERATE_SUB_KEYS 8
 #define KEY_NOTIFY 16
 #define KEY_CREATE_LINK 32
+#define KEY_WOW64_64KEY         0x00000100
+#define KEY_WOW64_32KEY         0x00000200
+#define KEY_WOW64_RES           0x00000300
+
 #define KEY_WRITE 0x20006
 #define KEY_EXECUTE 0x20019
 #define KEY_READ 0x20019