diff --git a/clone.py b/clone.py
index 4e9067d..1ee190f 100644
--- a/clone.py
+++ b/clone.py
@@ -24,28 +24,28 @@ class Cloner:
                 elif entry.is_file():
                     self.handleFile(entry.path)
 
-    def handleFile(self, fileName: str):
-        cloneFileName = fileName.replace(self.targetDir, self.backupDir)
+    def handleFile(self, targetFileName: str):
+        cloneFileName = targetFileName.replace(self.targetDir, self.backupDir)
         cloneHashFileName = cloneFileName + '.md5'
         
         if os.path.exists(cloneFileName):
-            with open(cloneHashFileName, 'r') as cloneHashFile, open(fileName, 'rb') as targetFile:
+            with open(cloneHashFileName, 'r') as cloneHashFile, open(targetFileName, 'rb') as targetFile:
                 cloneHashFileContent = cloneHashFile.read()
                 targetFileContent = targetFile.read()
                 realHash = hashlib.md5(targetFileContent).hexdigest()
                 if realHash != cloneHashFileContent:
                     os.system('cp {backup} {real}'.format(
-                        backup=cloneFileName, real=fileName))
+                        backup=cloneFileName, real=targetFileName))
                     logging.warning(
-                        '{file} failed check, restoring...'.format(file=fileName))
+                        '{file} failed check, restoring...'.format(file=targetFileName))
                 else:
-                    logging.info('{file} is fine'.format(file=fileName))
+                    logging.info('{file} is fine'.format(file=targetFileName))
         else:
             logging.warning(
-                '{file} is a new file, added to backup dir'.format(file=fileName))
+                '{file} is a new file, added to backup dir'.format(file=targetFileName))
             os.system('cp {real} {clone}'.format(
-                real=fileName, clone=cloneFileName))
-            with open(cloneHashFileName, 'w') as cloneHashFile, open(fileName, 'rb') as targetFile:
+                real=targetFileName, clone=cloneFileName))
+            with open(cloneHashFileName, 'w') as cloneHashFile, open(targetFileName, 'rb') as targetFile:
                 targetFileContent = targetFile.read()
                 cloneHashFile.write(hashlib.md5(targetFileContent).hexdigest())