diff --git a/reactos/include/psdk/winnt.h b/reactos/include/psdk/winnt.h
index 08c0f4a3ab0..712ff6f5ce4 100644
--- a/reactos/include/psdk/winnt.h
+++ b/reactos/include/psdk/winnt.h
@@ -1122,13 +1122,21 @@ typedef enum
 #define IMAGE_SIZEOF_LINENUMBER 6
 #define IMAGE_SIZEOF_ARCHIVE_MEMBER_HDR 60
 #define SIZEOF_RFPO_DATA 16
-#define IMAGE_SUBSYSTEM_UNKNOWN	0
-#define IMAGE_SUBSYSTEM_NATIVE	1
-#define IMAGE_SUBSYSTEM_WINDOWS_GUI	2
-#define IMAGE_SUBSYSTEM_WINDOWS_CUI	3
-#define IMAGE_SUBSYSTEM_OS2_CUI	5
-#define IMAGE_SUBSYSTEM_POSIX_CUI	7
-#define IMAGE_SUBSYSTEM_XBOX	14
+
+#define IMAGE_SUBSYSTEM_UNKNOWN                      0
+#define IMAGE_SUBSYSTEM_NATIVE                       1
+#define IMAGE_SUBSYSTEM_WINDOWS_GUI                  2
+#define IMAGE_SUBSYSTEM_WINDOWS_CUI                  3
+#define IMAGE_SUBSYSTEM_OS2_CUI                      5
+#define IMAGE_SUBSYSTEM_POSIX_CUI                    7
+#define IMAGE_SUBSYSTEM_NATIVE_WINDOWS               8
+#define IMAGE_SUBSYSTEM_WINDOWS_CE_GUI               9
+#define IMAGE_SUBSYSTEM_EFI_APPLICATION             10
+#define IMAGE_SUBSYSTEM_EFI_BOOT_SERVICE_DRIVER     11
+#define IMAGE_SUBSYSTEM_EFI_RUNTIME_DRIVER          12
+#define IMAGE_SUBSYSTEM_EFI_ROM                     13
+#define IMAGE_SUBSYSTEM_XBOX                        14
+
 #define IMAGE_DLLCHARACTERISTICS_NO_ISOLATION 0x0200
 #define IMAGE_DLLCHARACTERISTICS_NO_SEH 0x0400
 #define IMAGE_DLLCHARACTERISTICS_NO_BIND 0x0800