diff --git a/sdk/xtdk/amd64/xtstruct.h b/sdk/xtdk/amd64/xtstruct.h
index 43ec0e2..155b213 100644
--- a/sdk/xtdk/amd64/xtstruct.h
+++ b/sdk/xtdk/amd64/xtstruct.h
@@ -17,7 +17,7 @@ typedef enum _CPUID_FEATURES CPUID_FEATURES, *PCPUID_FEATURES;
 typedef enum _CPUID_REQUESTS CPUID_REQUESTS, *PCPUID_REQUESTS;
 
 /* Architecture-related structures forward references */
-typedef struct ALIGN(16) _CONTEXT CONTEXT, *PCONTEXT;
+typedef struct _CONTEXT CONTEXT, *PCONTEXT;
 typedef struct _CPUID_REGISTERS CPUID_REGISTERS, *PCPUID_REGISTERS;
 typedef struct _FLOATING_SAVE_AREA FLOATING_SAVE_AREA, *PFLOATING_SAVE_AREA;
 typedef struct _HARDWARE_PTE HARDWARE_PTE, *PHARDWARE_PTE;
diff --git a/sdk/xtdk/xtstruct.h b/sdk/xtdk/xtstruct.h
index dc08107..ba9a9c1 100644
--- a/sdk/xtdk/xtstruct.h
+++ b/sdk/xtdk/xtstruct.h
@@ -195,7 +195,7 @@ typedef struct _LIST_ENTRY64 LIST_ENTRY64, *PLIST_ENTRY64;
 typedef struct _LOADER_GRAPHICS_INFORMATION_BLOCK LOADER_GRAPHICS_INFORMATION_BLOCK, *PLOADER_GRAPHICS_INFORMATION_BLOCK;
 typedef struct _LOADER_INFORMATION_BLOCK LOADER_INFORMATION_BLOCK, *PLOADER_INFORMATION_BLOCK;
 typedef struct _LOADER_MEMORY_MAPPING LOADER_MEMORY_MAPPING, *PLOADER_MEMORY_MAPPING;
-typedef struct ALIGN(16) _M128 M128, *PM128;
+typedef struct _M128 M128, *PM128;
 typedef struct _PCAT_FIRMWARE_INFORMATION PCAT_FIRMWARE_INFORMATION, *PPCAT_FIRMWARE_INFORMATION;
 typedef struct _PCI_COMMON_CONFIG PCI_COMMON_CONFIG, *PPCI_COMMON_CONFIG;
 typedef struct _PCI_COMMON_HEADER PCI_COMMON_HEADER, *PPCI_COMMON_HEADER;