diff --git a/sdk/xtdk/i686/mmtypes.h b/sdk/xtdk/i686/mmtypes.h
index 3f83e8d..8519662 100644
--- a/sdk/xtdk/i686/mmtypes.h
+++ b/sdk/xtdk/i686/mmtypes.h
@@ -189,95 +189,6 @@ typedef struct _HARDWARE_LEGACY_PTE
     ULONG PageFrameNumber:20;
 } HARDWARE_LEGACY_PTE, *PHARDWARE_LEGACY_PTE;
 
-/* Legacy Page Table Entry on non-PAE system */
-typedef struct _MMPTE_LEGACY_HARDWARE
-{
-    ULONG Valid:1;
-    ULONG Writable:1;
-    ULONG Owner:1;
-    ULONG WriteThrough:1;
-    ULONG CacheDisable:1;
-    ULONG Accessed:1;
-    ULONG Dirty:1;
-    ULONG LargePage:1;
-    ULONG Global:1;
-    ULONG CopyOnWrite:1;
-    ULONG Prototype:1;
-    ULONG Write:1;
-    ULONG PageFrameNumber:20;
-} MMPTE_LEGACY_HARDWARE, *PMMPTE_LEGACY_HARDWARE;
-
-/* Legacy Page Table Entry list structure definition (without PAE support) */
-typedef struct _MMPTE_LEGACY_LIST
-{
-    ULONG Valid:1;
-    ULONG OneEntry:1;
-    ULONG Reserved1:8;
-    ULONG Prototype:1;
-    ULONG Reserved2:1;
-    ULONG NextEntry:20;
-} MMPTE_LEGACY_LIST, *PMMPTE_LEGACY_LIST;
-
-/* Legacy Page Table Entry prototype structure definition (without PAE support) */
-typedef struct _MMPTE_LEGACY_PROTOTYPE
-{
-    ULONG Valid:1;
-    ULONG ProtoAddressLow:7;
-    ULONG ReadOnly:1;
-    ULONG WhichPool:1;
-    ULONG Prototype:1;
-    ULONG ProtoAddressHigh:21;
-} MMPTE_LEGACY_PROTOTYPE, *PMMPTE_LEGACY_PROTOTYPE;
-
-/* Legacy Page Table Entry software structure definition (without PAE support) */
-typedef struct _MMPTE_LEGACY_SOFTWARE
-{
-    ULONG Valid:1;
-    ULONG PageFileLow:4;
-    ULONG Protection:5;
-    ULONG Prototype:1;
-    ULONG Transition:1;
-    ULONG PageFileHigh:20;
-} MMPTE_LEGACY_SOFTWARE, *PMMPTE_LEGACY_SOFTWARE;
-
-/* Legacy Page Table Entry subsection structure definition (without PAE support) */
-typedef struct _MMPTE_LEGACY_SUBSECTION
-{
-    ULONG Valid:1;
-    ULONG SubsectionAddressLow:4;
-    ULONG Protection:5;
-    ULONG Prototype:1;
-    ULONG SubsectionAddressHigh:20;
-    ULONG WhichPool:1;
-} MMPTE_LEGACY_SUBSECTION, *PMMPTE_LEGACY_SUBSECTION;
-
-/* Legacy Page Table Entry transition structure definition (without PAE support) */
-typedef struct _MMPTE_LEGACY_TRANSITION
-{
-    ULONG Valid:1;
-    ULONG Write:1;
-    ULONG Owner:1;
-    ULONG WriteThrough:1;
-    ULONG CacheDisable:1;
-    ULONG Protection:5;
-    ULONG Prototype:1;
-    ULONG Transition:1;
-    ULONG PageFrameNumber:20;
-} MMPTE_LEGACY_TRANSITION, *PMMPTE_LEGACY_TRANSITION;
-
-/* Legacy Page Table Entry structure definition (without PAE support) */
-typedef union _MMPTE_LEGACY
-{
-    ULONG Long;
-    HARDWARE_LEGACY_PTE Flush;
-    MMPTE_LEGACY_HARDWARE Hardware;
-    MMPTE_LEGACY_PROTOTYPE Prototype;
-    MMPTE_LEGACY_SOFTWARE Software;
-    MMPTE_LEGACY_TRANSITION Transition;
-    MMPTE_LEGACY_SUBSECTION Subsection;
-    MMPTE_LEGACY_LIST List;
-} MMPTE_LEGACY, *PMMPTE_LEGACY;
-
 /* Page Frame Number structure definition */
 typedef struct _MMPFN
 {
diff --git a/sdk/xtdk/i686/xtstruct.h b/sdk/xtdk/i686/xtstruct.h
index 080f8b3..f02763c 100644
--- a/sdk/xtdk/i686/xtstruct.h
+++ b/sdk/xtdk/i686/xtstruct.h
@@ -47,12 +47,6 @@ typedef struct _KTRAP_FRAME KTRAP_FRAME, *PKTRAP_FRAME;
 typedef struct _KTSS KTSS, *PKTSS;
 typedef struct _MMPFN MMPFN, *PMMPFN;
 typedef struct _MMPTE_HARDWARE MMPTE_HARDWARE, *PMMPTE_HARDWARE;
-typedef struct _MMPTE_LEGACY_HARDWARE MMPTE_LEGACY_HARDWARE, *PMMPTE_LEGACY_HARDWARE;
-typedef struct _MMPTE_LEGACY_LIST MMPTE_LEGACY_LIST, *PMMPTE_LEGACY_LIST;
-typedef struct _MMPTE_LEGACY_PROTOTYPE MMPTE_LEGACY_PROTOTYPE, *PMMPTE_LEGACY_PROTOTYPE;
-typedef struct _MMPTE_LEGACY_SOFTWARE MMPTE_LEGACY_SOFTWARE, *PMMPTE_LEGACY_SOFTWARE;
-typedef struct _MMPTE_LEGACY_SUBSECTION MMPTE_LEGACY_SUBSECTION, *PMMPTE_LEGACY_SUBSECTION;
-typedef struct _MMPTE_LEGACY_TRANSITION MMPTE_LEGACY_TRANSITION, *PMMPTE_LEGACY_TRANSITION;
 typedef struct _MMPTE_LIST MMPTE_LIST, *PMMPTE_LIST;
 typedef struct _MMPTE_PROTOTYPE MMPTE_PROTOTYPE, *PMMPTE_PROTOTYPE;
 typedef struct _MMPTE_SOFTWARE MMPTE_SOFTWARE, *PMMPTE_SOFTWARE;
@@ -67,7 +61,5 @@ typedef union _APIC_LVT_REGISTER APIC_LVT_REGISTER, *PAPIC_LVT_REGISTER;
 typedef union _APIC_SPURIOUS_REGISTER APIC_SPURIOUS_REGISTER, *PAPIC_SPURIOUS_REGISTER;
 typedef union _MMPTE MMPDE, *PMMPDE;
 typedef union _MMPTE MMPTE, *PMMPTE;
-typedef union _MMPTE_LEGACY MMPDE_LEGACY, *PMMPDE_LEGACY;
-typedef union _MMPTE_LEGACY MMPTE_LEGACY, *PMMPTE_LEGACY;
 
 #endif /* __XTDK_I686_XTSTRUCT_H */