diff --git a/reactos/include/psdk/winbase.h b/reactos/include/psdk/winbase.h
index cfd340cccf2..815f6bc40fc 100644
--- a/reactos/include/psdk/winbase.h
+++ b/reactos/include/psdk/winbase.h
@@ -587,6 +587,11 @@ extern "C" {
 
 #define INIT_ONCE_STATIC_INIT RTL_RUN_ONCE_INIT
 
+#if (_WIN32_WINNT >= 0x0600)
+#define PROCESS_DEP_ENABLE 0x00000001
+#define PROCESS_DEP_DISABLE_ATL_THUNK_EMULATION 0x00000002
+#endif
+
 #ifndef RC_INVOKED
 
 #ifndef _FILETIME_
diff --git a/reactos/include/psdk/winnt.h b/reactos/include/psdk/winnt.h
index 4b414207880..acc24cf382f 100644
--- a/reactos/include/psdk/winnt.h
+++ b/reactos/include/psdk/winnt.h
@@ -2029,6 +2029,8 @@ typedef enum {
 #define PF_RDTSC_INSTRUCTION_AVAILABLE 8
 #define PF_PAE_ENABLED 9
 #define PF_XMMI64_INSTRUCTIONS_AVAILABLE 10
+#define PF_NX_ENABLED 12
+
 /* also in ddk/ntifs.h */
 #define FILE_ACTION_ADDED                   0x00000001
 #define FILE_ACTION_REMOVED                 0x00000002