diff --git a/reactos/include/ddk/ntimage.h b/reactos/include/ddk/ntimage.h
index 54bf3628e77..0c619fb2cd3 100644
--- a/reactos/include/ddk/ntimage.h
+++ b/reactos/include/ddk/ntimage.h
@@ -429,17 +429,39 @@ typedef PIMAGE_NT_HEADERS32                 PIMAGE_NT_HEADERS;
    FIELD_OFFSET( IMAGE_NT_HEADERS, OptionalHeader ) +  \
    ((NtHeader))->FileHeader.SizeOfOptionalHeader))
 
+//
+// Subsystems
+//
+#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_SUBSYSTEM_WINDOWS_BOOT_APPLICATION        16
+#define IMAGE_SUBSYSTEM_XBOX_CODE_CATALOG               17
+
 //
 // Dll Characteristics
 //
-#define IMAGE_DLLCHARACTERISTICS_DYNAMIC_BASE          0x0040
-#define IMAGE_DLLCHARACTERISTICS_FORCE_INTEGRITY       0x0080
-#define IMAGE_DLLCHARACTERISTICS_NX_COMPAT             0x0100
-#define IMAGE_DLLCHARACTERISTICS_NO_ISOLATION          0x0200
-#define IMAGE_DLLCHARACTERISTICS_NO_SEH                0x0400
-#define IMAGE_DLLCHARACTERISTICS_NO_BIND               0x0800
-#define IMAGE_DLLCHARACTERISTICS_WDM_DRIVER            0x2000
-#define IMAGE_DLLCHARACTERISTICS_TERMINAL_SERVER_AWARE 0x8000
+#define IMAGE_DLLCHARACTERISTICS_HIGH_ENTROPY_VA        0x0020
+#define IMAGE_DLLCHARACTERISTICS_DYNAMIC_BASE           0x0040
+#define IMAGE_DLLCHARACTERISTICS_FORCE_INTEGRITY        0x0080
+#define IMAGE_DLLCHARACTERISTICS_NX_COMPAT              0x0100
+#define IMAGE_DLLCHARACTERISTICS_NO_ISOLATION           0x0200
+#define IMAGE_DLLCHARACTERISTICS_NO_SEH                 0x0400
+#define IMAGE_DLLCHARACTERISTICS_NO_BIND                0x0800
+#define IMAGE_DLLCHARACTERISTICS_APPCONTAINER           0x1000
+#define IMAGE_DLLCHARACTERISTICS_WDM_DRIVER             0x2000
+#define IMAGE_DLLCHARACTERISTICS_GUARD_CF               0x4000
+#define IMAGE_DLLCHARACTERISTICS_TERMINAL_SERVER_AWARE  0x8000
 
 //
 // Loader Flags