diff --git a/sdk/xtdk/bltypes.h b/sdk/xtdk/bltypes.h
index ce762c0..3771e4e 100644
--- a/sdk/xtdk/bltypes.h
+++ b/sdk/xtdk/bltypes.h
@@ -84,7 +84,7 @@ typedef EFI_STATUS (*PBL_INVOKE_BOOT_PROTOCOL)(IN PWCHAR ShortName, IN PLIST_ENT
 typedef EFI_STATUS (*PBL_LOCATE_PROTOCOL_HANDLES)(OUT PEFI_HANDLE *Handles, OUT PUINT_PTR Count, IN PEFI_GUID ProtocolGuid);
 typedef EFI_STATUS (*PBL_LOAD_EFI_IMAGE)(IN PEFI_DEVICE_PATH_PROTOCOL DevicePath, IN PVOID ImageData, IN SIZE_T ImageSize, OUT PEFI_HANDLE ImageHandle);
 typedef EFI_STATUS (*PBL_MAP_EFI_MEMORY)(IN OUT PXTBL_PAGE_MAPPING PageMap, IN OUT PVOID *MemoryMapAddress, IN PBL_GET_MEMTYPE_ROUTINE GetMemoryTypeRoutine);
-typedef EFI_STATUS (*PBL_MAP_PAGE)(IN PXTBL_PAGE_MAPPING PageMap, IN UINT_PTR VirtualAddress, IN UINT_PTR PhysicalAddress, IN UINT NumberOfPages);
+typedef EFI_STATUS (*PBL_MAP_PAGE)(IN PXTBL_PAGE_MAPPING PageMap, IN ULONG_PTR VirtualAddress, IN ULONG_PTR PhysicalAddress, IN ULONG NumberOfPages);
 typedef EFI_STATUS (*PBL_MAP_VIRTUAL_MEMORY)(IN OUT PXTBL_PAGE_MAPPING PageMap, IN PVOID VirtualAddress, IN PVOID PhysicalAddress, IN ULONGLONG NumberOfPages, IN LOADER_MEMORY_TYPE MemoryType);
 typedef EFI_STATUS (*PBL_OPEN_VOLUME)(IN PEFI_DEVICE_PATH_PROTOCOL DevicePath, OUT PEFI_HANDLE DiskHandle, OUT PEFI_FILE_HANDLE *FsHandle);
 typedef EFI_STATUS (*PBL_OPEN_PROTOCOL)(OUT PEFI_HANDLE Handle, OUT PVOID *ProtocolHandler, IN PEFI_GUID ProtocolGuid);
diff --git a/xtldr/arch/amd64/memory.c b/xtldr/arch/amd64/memory.c
index 07e3c06..0b1d712 100644
--- a/xtldr/arch/amd64/memory.c
+++ b/xtldr/arch/amd64/memory.c
@@ -149,9 +149,9 @@ BlBuildPageMap(IN PXTBL_PAGE_MAPPING PageMap,
 XTCDECL
 EFI_STATUS
 BlMapPage(IN PXTBL_PAGE_MAPPING PageMap,
-          IN UINT_PTR VirtualAddress,
-          IN UINT_PTR PhysicalAddress,
-          IN UINT NumberOfPages)
+          IN ULONG_PTR VirtualAddress,
+          IN ULONG_PTR PhysicalAddress,
+          IN ULONG NumberOfPages)
 {
     SIZE_T Pml1Entry, Pml2Entry, Pml3Entry, Pml4Entry, Pml5Entry;
     PHARDWARE_PTE Pml1, Pml2, Pml3, Pml4, Pml5;
diff --git a/xtldr/arch/i686/memory.c b/xtldr/arch/i686/memory.c
index d34c20a..56b2e57 100644
--- a/xtldr/arch/i686/memory.c
+++ b/xtldr/arch/i686/memory.c
@@ -169,9 +169,9 @@ BlBuildPageMap(IN PXTBL_PAGE_MAPPING PageMap,
 XTCDECL
 EFI_STATUS
 BlMapPage(IN PXTBL_PAGE_MAPPING PageMap,
-          IN UINT_PTR VirtualAddress,
-          IN UINT_PTR PhysicalAddress,
-          IN UINT NumberOfPages)
+          IN ULONG_PTR VirtualAddress,
+          IN ULONG_PTR PhysicalAddress,
+          IN ULONG NumberOfPages)
 {
     SIZE_T Pml1Entry, Pml2Entry, Pml3Entry;
     PHARDWARE_PTE Pml1, Pml2, Pml3;
diff --git a/xtldr/includes/xtldr.h b/xtldr/includes/xtldr.h
index cbaa68f..e2fc47d 100644
--- a/xtldr/includes/xtldr.h
+++ b/xtldr/includes/xtldr.h
@@ -18,7 +18,7 @@
 /* XTLDR routines forward references */
 XTCDECL
 EFI_STATUS
-BlAllocateMemoryPages(IN ULONGLONG Pages,
+BlAllocateMemoryPages(IN ULONGLONG NumberOfPages,
                       OUT PEFI_PHYSICAL_ADDRESS Memory);
 
 XTCDECL
@@ -121,7 +121,7 @@ BlFindVolumeDevicePath(IN PEFI_DEVICE_PATH_PROTOCOL FsHandle,
 
 XTCDECL
 EFI_STATUS
-BlFreeMemoryPages(IN ULONGLONG Pages,
+BlFreeMemoryPages(IN ULONGLONG NumberOfPages,
                   IN EFI_PHYSICAL_ADDRESS Memory);
 
 XTCDECL
@@ -249,9 +249,9 @@ BlMapEfiMemory(IN OUT PXTBL_PAGE_MAPPING PageMap,
 XTCDECL
 EFI_STATUS
 BlMapPage(IN PXTBL_PAGE_MAPPING PageMap,
-          IN UINT_PTR VirtualAddress,
-          IN UINT_PTR PhysicalAddress,
-          IN UINT NumberOfPages);
+          IN ULONG_PTR VirtualAddress,
+          IN ULONG_PTR PhysicalAddress,
+          IN ULONG NumberOfPages);
 
 XTCDECL
 EFI_STATUS
diff --git a/xtldr/memory.c b/xtldr/memory.c
index dc4f7d7..953bab4 100644
--- a/xtldr/memory.c
+++ b/xtldr/memory.c
@@ -12,7 +12,7 @@
 /**
  * This routine allocates one or more 4KB pages.
  *
- * @param Pages
+ * @param NumberOfPages
  *        The number of contiguous 4KB pages to allocate.
  *
  * @param Memory
@@ -24,10 +24,10 @@
  */
 XTCDECL
 EFI_STATUS
-BlAllocateMemoryPages(IN ULONGLONG Pages,
+BlAllocateMemoryPages(IN ULONGLONG NumberOfPages,
                       OUT PEFI_PHYSICAL_ADDRESS Memory)
 {
-    return EfiSystemTable->BootServices->AllocatePages(AllocateAnyPages, EfiLoaderData, Pages, Memory);
+    return EfiSystemTable->BootServices->AllocatePages(AllocateAnyPages, EfiLoaderData, NumberOfPages, Memory);
 }
 
 /**
@@ -55,7 +55,7 @@ BlAllocateMemoryPool(IN UINT_PTR Size,
 /**
  * This routine frees memory pages.
  *
- * @param Pages
+ * @param NumberOfPages
  *        The number of contiguous 4 KB pages to free.
  *
  * @param Memory
@@ -67,10 +67,10 @@ BlAllocateMemoryPool(IN UINT_PTR Size,
  */
 XTCDECL
 EFI_STATUS
-BlFreeMemoryPages(IN ULONGLONG Pages,
+BlFreeMemoryPages(IN ULONGLONG NumberOfPages,
                   IN EFI_PHYSICAL_ADDRESS Memory)
 {
-    return EfiSystemTable->BootServices->FreePages(Memory, Pages);
+    return EfiSystemTable->BootServices->FreePages(Memory, NumberOfPages);
 }
 
 /**