diff --git a/include/ddk/ntddk.h b/include/ddk/ntddk.h
index 36f69cdf9a2..e3c91240231 100644
--- a/include/ddk/ntddk.h
+++ b/include/ddk/ntddk.h
@@ -107,6 +107,8 @@ typedef enum _CONFIGURATION_TYPE
     MaximumType
 } CONFIGURATION_TYPE, *PCONFIGURATION_TYPE;
 
+#define IMAGE_ADDRESSING_MODE_32BIT 3
+
 typedef struct _IMAGE_INFO
 {
     union
@@ -118,7 +120,11 @@ typedef struct _IMAGE_INFO
             ULONG SystemModeImage      : 1;
             ULONG ImageMappedToAllPids : 1;
             ULONG ExtendedInfoPresent  : 1;
-            ULONG Reserved             : 21;
+            ULONG MachineTypeMismatch : 1;
+            ULONG ImageSignatureLevel : 4;
+            ULONG ImageSignatureType : 3;
+            ULONG ImagePartialMap : 1;
+            ULONG Reserved : 12;
         } DUMMYSTRUCTNAME;
     } DUMMYUNIONNAME;
     PVOID  ImageBase;