diff --git a/bazarr/check_update.py b/bazarr/check_update.py
index 8f0d61a15..cd13314b2 100644
--- a/bazarr/check_update.py
+++ b/bazarr/check_update.py
@@ -194,16 +194,20 @@ def update_cleaner(zipfile, bazarr_dir, config_dir):
                      separator + '__pycache__' + separator + '$']
     if os.path.abspath(bazarr_dir).lower() == os.path.abspath(config_dir).lower():
         # for users who installed Bazarr inside the config directory (ie: `%programdata%\Bazarr` on windows)
-        with os.scandir(config_dir) as directories:
-            for directory in directories:
-                if directory.is_dir():
-                    dir_to_ignore.append('^' + directory.name + os.path.sep)
+        dir_to_ignore.append('^backup' + separator)
+        dir_to_ignore.append('^cache' + separator)
+        dir_to_ignore.append('^config' + separator)
+        dir_to_ignore.append('^db' + separator)
+        dir_to_ignore.append('^log' + separator)
+        dir_to_ignore.append('^restore' + separator)
+        dir_to_ignore.append('^update' + separator)
     elif os.path.abspath(bazarr_dir).lower() in os.path.abspath(config_dir).lower():
         # when config directory is a child of Bazarr installation directory
-        dir_to_ignore.append('^' + os.path.relpath(config_dir, bazarr_dir) + os.path.sep)
-    dir_to_ignore_regex = re.compile('(?:% s)' % '|'.join(dir_to_ignore))
+        dir_to_ignore.append('^' + os.path.relpath(config_dir, bazarr_dir) + separator)
+    dir_to_ignore_regex_string = '(?:% s)' % '|'.join(dir_to_ignore)
     logging.debug(f'BAZARR upgrade leftover cleaner will ignore directories matching this '
-                  f'regex: {dir_to_ignore_regex.pattern}')
+                  f'regex: {dir_to_ignore_regex_string}')
+    dir_to_ignore_regex = re.compile(dir_to_ignore_regex_string)
 
     file_to_ignore = ['nssm.exe', '7za.exe', 'unins000.exe', 'unins000.dat']
     logging.debug('BAZARR upgrade leftover cleaner will ignore those files: {}'.format(', '.join(file_to_ignore)))