diff --git a/src/core/file_sys/archive_backend.h b/src/core/file_sys/archive_backend.h
index 601e95d8c..152c8201c 100644
--- a/src/core/file_sys/archive_backend.h
+++ b/src/core/file_sys/archive_backend.h
@@ -108,7 +108,7 @@ public:
      * @param size The size of the new file, filled with zeroes
      * @return File creation result code
      */
-    virtual ResultCode CreateFile(const Path& path, u32 size) const = 0;
+    virtual ResultCode CreateFile(const Path& path, u64 size) const = 0;
 
     /**
      * Create a directory specified by its path
diff --git a/src/core/file_sys/disk_archive.cpp b/src/core/file_sys/disk_archive.cpp
index 0ba502200..c0ecda487 100644
--- a/src/core/file_sys/disk_archive.cpp
+++ b/src/core/file_sys/disk_archive.cpp
@@ -37,7 +37,7 @@ bool DiskArchive::DeleteDirectory(const Path& path) const {
     return FileUtil::DeleteDir(mount_point + path.AsString());
 }
 
-ResultCode DiskArchive::CreateFile(const FileSys::Path& path, u32 size) const {
+ResultCode DiskArchive::CreateFile(const FileSys::Path& path, u64 size) const {
     std::string full_path = mount_point + path.AsString();
 
     if (FileUtil::Exists(full_path))
diff --git a/src/core/file_sys/disk_archive.h b/src/core/file_sys/disk_archive.h
index ef9a98057..1bdbc2698 100644
--- a/src/core/file_sys/disk_archive.h
+++ b/src/core/file_sys/disk_archive.h
@@ -37,7 +37,7 @@ public:
     bool DeleteFile(const Path& path) const override;
     bool RenameFile(const Path& src_path, const Path& dest_path) const override;
     bool DeleteDirectory(const Path& path) const override;
-    ResultCode CreateFile(const Path& path, u32 size) const override;
+    ResultCode CreateFile(const Path& path, u64 size) const override;
     bool CreateDirectory(const Path& path) const override;
     bool RenameDirectory(const Path& src_path, const Path& dest_path) const override;
     std::unique_ptr<DirectoryBackend> OpenDirectory(const Path& path) const override;
diff --git a/src/core/file_sys/ivfc_archive.cpp b/src/core/file_sys/ivfc_archive.cpp
index 2efc31a8c..5325afb58 100644
--- a/src/core/file_sys/ivfc_archive.cpp
+++ b/src/core/file_sys/ivfc_archive.cpp
@@ -39,7 +39,7 @@ bool IVFCArchive::DeleteDirectory(const Path& path) const {
     return false;
 }
 
-ResultCode IVFCArchive::CreateFile(const Path& path, u32 size) const {
+ResultCode IVFCArchive::CreateFile(const Path& path, u64 size) const {
     LOG_CRITICAL(Service_FS, "Attempted to create a file in an IVFC archive (%s).", GetName().c_str());
     // TODO: Verify error code
     return ResultCode(ErrorDescription::NotAuthorized, ErrorModule::FS, ErrorSummary::NotSupported, ErrorLevel::Permanent);
diff --git a/src/core/file_sys/ivfc_archive.h b/src/core/file_sys/ivfc_archive.h
index f3fd82de4..2a4e4def3 100644
--- a/src/core/file_sys/ivfc_archive.h
+++ b/src/core/file_sys/ivfc_archive.h
@@ -38,7 +38,7 @@ public:
     bool DeleteFile(const Path& path) const override;
     bool RenameFile(const Path& src_path, const Path& dest_path) const override;
     bool DeleteDirectory(const Path& path) const override;
-    ResultCode CreateFile(const Path& path, u32 size) const override;
+    ResultCode CreateFile(const Path& path, u64 size) const override;
     bool CreateDirectory(const Path& path) const override;
     bool RenameDirectory(const Path& src_path, const Path& dest_path) const override;
     std::unique_ptr<DirectoryBackend> OpenDirectory(const Path& path) const override;
diff --git a/src/core/hle/service/fs/archive.cpp b/src/core/hle/service/fs/archive.cpp
index d64b3656a..57fc2f44d 100644
--- a/src/core/hle/service/fs/archive.cpp
+++ b/src/core/hle/service/fs/archive.cpp
@@ -347,7 +347,7 @@ ResultCode DeleteDirectoryFromArchive(ArchiveHandle archive_handle, const FileSy
                       ErrorSummary::Canceled, ErrorLevel::Status);
 }
 
-ResultCode CreateFileInArchive(ArchiveHandle archive_handle, const FileSys::Path& path, u32 file_size) {
+ResultCode CreateFileInArchive(ArchiveHandle archive_handle, const FileSys::Path& path, u64 file_size) {
     ArchiveBackend* archive = GetArchive(archive_handle);
     if (archive == nullptr)
         return ERR_INVALID_HANDLE;
diff --git a/src/core/hle/service/fs/archive.h b/src/core/hle/service/fs/archive.h
index 952deb4d4..430dc2ef9 100644
--- a/src/core/hle/service/fs/archive.h
+++ b/src/core/hle/service/fs/archive.h
@@ -136,7 +136,7 @@ ResultCode DeleteDirectoryFromArchive(ArchiveHandle archive_handle, const FileSy
  * @param file_size The size of the new file, filled with zeroes
  * @return File creation result code
  */
-ResultCode CreateFileInArchive(ArchiveHandle archive_handle, const FileSys::Path& path, u32 file_size);
+ResultCode CreateFileInArchive(ArchiveHandle archive_handle, const FileSys::Path& path, u64 file_size);
 
 /**
  * Create a Directory from an Archive
diff --git a/src/core/hle/service/fs/fs_user.cpp b/src/core/hle/service/fs/fs_user.cpp
index 632620a56..fa521132c 100644
--- a/src/core/hle/service/fs/fs_user.cpp
+++ b/src/core/hle/service/fs/fs_user.cpp
@@ -234,7 +234,7 @@ static void DeleteDirectory(Service::Interface* self) {
  *      3 : Archive handle upper word
  *      4 : File path string type
  *      5 : File path string size
- *      7 : File size (filled with zeroes)
+ *      7-8 : File size
  *      10: File path string data
  *  Outputs:
  *      1 : Result of function, 0 on success, otherwise error code
@@ -245,12 +245,12 @@ static void CreateFile(Service::Interface* self) {
     ArchiveHandle archive_handle = MakeArchiveHandle(cmd_buff[2], cmd_buff[3]);
     auto filename_type    = static_cast<FileSys::LowPathType>(cmd_buff[4]);
     u32 filename_size     = cmd_buff[5];
-    u32 file_size         = cmd_buff[7];
+    u64 file_size         = ((u64)cmd_buff[8] << 32) | cmd_buff[7];
     u32 filename_ptr      = cmd_buff[10];
 
     FileSys::Path file_path(filename_type, filename_size, filename_ptr);
 
-    LOG_DEBUG(Service_FS, "type=%d size=%d data=%s", filename_type, filename_size, file_path.DebugStr().c_str());
+    LOG_DEBUG(Service_FS, "type=%d size=%lld data=%s", filename_type, filename_size, file_path.DebugStr().c_str());
 
     cmd_buff[1] = CreateFileInArchive(archive_handle, file_path, file_size).raw;
 }