diff --git a/troposphere/haze/include/haze/common.hpp b/troposphere/haze/include/haze/common.hpp
index b0f1f6b12..5ebaf5861 100644
--- a/troposphere/haze/include/haze/common.hpp
+++ b/troposphere/haze/include/haze/common.hpp
@@ -42,6 +42,6 @@ namespace haze {
 
     using Result = ::ams::Result;
 
-    static constexpr size_t UsbBulkPacketBufferSize = 1_MB;
+    static constexpr u32 UsbBulkPacketBufferSize = 1_MB;
 
 }
diff --git a/troposphere/haze/include/haze/ptp.hpp b/troposphere/haze/include/haze/ptp.hpp
index 6d7a76e15..2a9f18fc7 100644
--- a/troposphere/haze/include/haze/ptp.hpp
+++ b/troposphere/haze/include/haze/ptp.hpp
@@ -20,9 +20,9 @@
 
 namespace haze {
 
-    constexpr inline size_t PtpUsbBulkHighSpeedMaxPacketLength = 0x200;
-    constexpr inline size_t PtpUsbBulkHeaderLength = 2 * sizeof(u32) + 2 * sizeof(u16);
-    constexpr inline size_t PtpStringMaxLength = 255;
+    constexpr inline u32 PtpUsbBulkHighSpeedMaxPacketLength = 0x200;
+    constexpr inline u32 PtpUsbBulkHeaderLength = 2 * sizeof(u32) + 2 * sizeof(u16);
+    constexpr inline u32 PtpStringMaxLength = 255;
 
     enum PtpUsbBulkContainerType : u16 {
         PtpUsbBulkContainerType_Undefined = 0,
diff --git a/troposphere/haze/include/haze/ptp_data_builder.hpp b/troposphere/haze/include/haze/ptp_data_builder.hpp
index 46498c8d2..6e1baa064 100644
--- a/troposphere/haze/include/haze/ptp_data_builder.hpp
+++ b/troposphere/haze/include/haze/ptp_data_builder.hpp
@@ -24,8 +24,8 @@ namespace haze {
     class PtpDataBuilder final {
         private:
             AsyncUsbServer *m_server;
-            size_t m_transmitted_size;
-            size_t m_offset;
+            u32 m_transmitted_size;
+            u32 m_offset;
             u8 *m_data;
             bool m_disabled;
         private:
@@ -110,7 +110,7 @@ namespace haze {
                 HAZE_ASSERT(m_offset == 0 && m_transmitted_size == 0);
 
                 /* Declare how many bytes the data will require to write. */
-                size_t data_size = 0;
+                u32 data_size = 0;
                 {
                     /* Temporarily disable writing to calculate the size.*/
                     m_disabled = true;
diff --git a/troposphere/haze/include/haze/ptp_data_parser.hpp b/troposphere/haze/include/haze/ptp_data_parser.hpp
index 2ae23b84b..f151f237a 100644
--- a/troposphere/haze/include/haze/ptp_data_parser.hpp
+++ b/troposphere/haze/include/haze/ptp_data_parser.hpp
@@ -56,7 +56,7 @@ namespace haze {
                 }
             }
 
-            Result ReadBuffer(u8 *buffer, size_t count, size_t *out_read_count) {
+            Result ReadBuffer(u8 *buffer, u32 count, u32 *out_read_count) {
                 *out_read_count = 0;
 
                 while (count > 0) {
@@ -80,7 +80,7 @@ namespace haze {
 
             template <typename T>
             Result Read(T *out_t) {
-                size_t read_count;
+                u32 read_count;
                 u8 bytes[sizeof(T)];
 
                 R_TRY(this->ReadBuffer(bytes, sizeof(T), std::addressof(read_count)));
diff --git a/troposphere/haze/include/haze/usb_session.hpp b/troposphere/haze/include/haze/usb_session.hpp
index b1c91f012..dacd83d49 100644
--- a/troposphere/haze/include/haze/usb_session.hpp
+++ b/troposphere/haze/include/haze/usb_session.hpp
@@ -41,7 +41,7 @@ namespace haze {
 
             bool GetConfigured() const;
             Event *GetCompletionEvent(UsbSessionEndpoint ep) const;
-            Result TransferAsync(UsbSessionEndpoint ep, void *buffer, size_t size, u32 *out_urb_id);
+            Result TransferAsync(UsbSessionEndpoint ep, void *buffer, u32 size, u32 *out_urb_id);
             Result GetTransferResult(UsbSessionEndpoint ep, u32 urb_id, u32 *out_transferred_size);
             Result SetZeroLengthTermination(bool enable);
     };
diff --git a/troposphere/haze/source/ptp_object_heap.cpp b/troposphere/haze/source/ptp_object_heap.cpp
index 4a62ab217..2157b59c5 100644
--- a/troposphere/haze/source/ptp_object_heap.cpp
+++ b/troposphere/haze/source/ptp_object_heap.cpp
@@ -25,19 +25,18 @@ namespace haze {
     }
 
     void PtpObjectHeap::Initialize() {
-        size_t mem_used = 0;
-
         /* If we're already initialized, skip re-initialization. */
         if (m_heap_block_size != 0) {
             return;
         }
 
         /* Estimate how much memory we can reserve. */
+        size_t mem_used = 0;
         HAZE_R_ABORT_UNLESS(svcGetInfo(std::addressof(mem_used), InfoType_UsedMemorySize, svc::CurrentProcess, 0));
         HAZE_ASSERT(mem_used > LibnxReservedMemorySize);
         mem_used -= LibnxReservedMemorySize;
 
-        /* Take the rest for ourselves. */
+        /* Calculate size of blocks. */
         m_heap_block_size = mem_used / NumHeapBlocks;
         HAZE_ASSERT(m_heap_block_size > 0);
 
diff --git a/troposphere/haze/source/ptp_responder.cpp b/troposphere/haze/source/ptp_responder.cpp
index b800af792..c009f3e57 100644
--- a/troposphere/haze/source/ptp_responder.cpp
+++ b/troposphere/haze/source/ptp_responder.cpp
@@ -595,7 +595,7 @@ namespace haze {
         s64 offset = 0;
         while (true) {
             /* Get the next batch. */
-            size_t bytes_read;
+            u64 bytes_read;
             R_TRY(m_fs.ReadFile(std::addressof(file), offset, g_fs_buffer, FsBufferSize, FsReadOption_None, std::addressof(bytes_read)));
 
             offset += bytes_read;
@@ -726,7 +726,7 @@ namespace haze {
         /* Begin writing to the filesystem. */
         while (true) {
             /* Read as many bytes as we can. */
-            size_t bytes_received;
+            u32 bytes_received;
             const Result read_res = dp.ReadBuffer(g_fs_buffer, FsBufferSize, std::addressof(bytes_received));
 
             /* Write to the file. */
diff --git a/troposphere/haze/source/usb_session.cpp b/troposphere/haze/source/usb_session.cpp
index 57538abae..c9a6abdc2 100644
--- a/troposphere/haze/source/usb_session.cpp
+++ b/troposphere/haze/source/usb_session.cpp
@@ -233,7 +233,7 @@ namespace haze {
         return std::addressof(m_endpoints[ep]->CompletionEvent);
     }
 
-    Result UsbSession::TransferAsync(UsbSessionEndpoint ep, void *buffer, size_t size, u32 *out_urb_id) {
+    Result UsbSession::TransferAsync(UsbSessionEndpoint ep, void *buffer, u32 size, u32 *out_urb_id) {
         R_RETURN(usbDsEndpoint_PostBufferAsync(m_endpoints[ep], buffer, size, out_urb_id));
     }