diff --git a/kindlecomicconverter/KCC_gui.py b/kindlecomicconverter/KCC_gui.py
index 1f9198a..111df35 100644
--- a/kindlecomicconverter/KCC_gui.py
+++ b/kindlecomicconverter/KCC_gui.py
@@ -517,7 +517,6 @@ class WorkerThread(QThread):
                             for item in outputPath:
                                 GUI.progress.content = ''
                                 mobiPath = item.replace('.epub', '.mobi')
-                                os.remove(mobiPath + '_toclean')
                                 if GUI.targetDirectory and GUI.targetDirectory != os.path.dirname(mobiPath):
                                     try:
                                         move(mobiPath, GUI.targetDirectory)
@@ -538,8 +537,6 @@ class WorkerThread(QThread):
                                 mobiPath = item.replace('.epub', '.mobi')
                                 if os.path.exists(mobiPath):
                                     os.remove(mobiPath)
-                                if os.path.exists(mobiPath + '_toclean'):
-                                    os.remove(mobiPath + '_toclean')
                             MW.addMessage.emit('Failed to process MOBI file!', 'error', False)
                             MW.addTrayMessage.emit('Failed to process MOBI file!', 'Critical')
                     else:
diff --git a/kindlecomicconverter/comic2ebook.py b/kindlecomicconverter/comic2ebook.py
index 86fcbbc..44746b7 100755
--- a/kindlecomicconverter/comic2ebook.py
+++ b/kindlecomicconverter/comic2ebook.py
@@ -34,7 +34,7 @@ from stat import S_IWRITE, S_IREAD, S_IEXEC
 from typing import List
 from zipfile import ZipFile, ZIP_STORED
 from tempfile import mkdtemp, gettempdir
-from shutil import move, copytree, rmtree, copyfile
+from shutil import move, copytree, rmtree
 from multiprocessing import Pool, cpu_count
 from uuid import uuid4
 from natsort import os_sort_keygen, os_sorted
@@ -1890,12 +1890,7 @@ def makeBook(source, qtgui=None, job_progress=''):
             makeZIP(tome + '_comic', tome, job_progress, True)
         # Copy files to final destination (PDF files are already saved directly)
         if options.format != 'PDF':
-            copyfile(tome + '_comic.zip', filepath[-1])
-            try:
-                os.remove(tome + '_comic.zip')
-            except FileNotFoundError:
-                # newly temporary created file is not found. It might have been already deleted
-                pass
+            move(tome + '_comic.zip', filepath[-1])
         rmtree(tome, True)
         if GUI:
             GUI.progressBarTick.emit('tick')
@@ -1918,8 +1913,6 @@ def makeBook(source, qtgui=None, job_progress=''):
             if not output[0]:
                 print(f'{job_progress}Error: Failed to tweak KindleGen output!')
                 return filepath
-            else:
-                os.remove(i.replace('.epub', '.mobi') + '_toclean')
             if cover and k.path and k.coverSupport:
                 options.covers[filepath.index(i)][0].saveToKindle(k, options.covers[filepath.index(i)][1])
     if options.delete:
@@ -1945,9 +1938,8 @@ def makeMOBIFix(item, uuid):
     if not options.keep_epub:
         os.remove(item)
     mobiPath = item.replace('.epub', '.mobi')
-    move(mobiPath, mobiPath + '_toclean')
     try:
-        dualmetafix.DualMobiMetaFix(mobiPath + '_toclean', mobiPath, bytes(uuid, 'UTF-8'), is_pdoc)
+        dualmetafix.DualMobiMetaFix(mobiPath, bytes(uuid, 'UTF-8'), is_pdoc)
         return [True]
     except Exception as err:
         return [False, format(err)]
diff --git a/kindlecomicconverter/dualmetafix.py b/kindlecomicconverter/dualmetafix.py
index beddc5a..6a950d8 100644
--- a/kindlecomicconverter/dualmetafix.py
+++ b/kindlecomicconverter/dualmetafix.py
@@ -136,12 +136,11 @@ def del_exth(rec0, exth_num):
 
 
 class DualMobiMetaFix:
-    def __init__(self, infile, outfile, asin, is_pdoc):
+    def __init__(self, outfile, asin, is_pdoc):
         cdetype = b'EBOK'
         if is_pdoc:
             cdetype = b'PDOC'
 
-        shutil.copyfile(infile, outfile)
         f = open(outfile, "r+b")
         self.datain = mmap.mmap(f.fileno(), 0)
         self.datain_rec0 = readsection(self.datain, 0)