diff --git a/docs/source/changelog.rst b/docs/source/changelog.rst
index 79f7e8a0..a850da7f 100644
--- a/docs/source/changelog.rst
+++ b/docs/source/changelog.rst
@@ -4,6 +4,8 @@ Changelog
 
 [unreleased]
 
+- **Incompatible** default path for files is changed. Now the library uses an md5 hash of the phone number or bot token instead of just a phone number.
+  It should not be noticeable for most cases, but if you rely on locally saved files or database, you need to pass the ``files_directory`` parameter to the ``telegram.client.Telegram``.
 - Fixed problem with randomly raised "Database encryption key is needed" errors during login process. (#12)
 - Fixed `stop` method execution. (#8)
 - Added ``examples/bot_login.py`` example.
diff --git a/telegram/client.py b/telegram/client.py
index 2a43d2c9..0794692e 100644
--- a/telegram/client.py
+++ b/telegram/client.py
@@ -1,4 +1,5 @@
 import os
+import hashlib
 import time
 import queue
 import signal
@@ -75,7 +76,13 @@ def __init__(
         self._database_encryption_key = database_encryption_key
 
         if not files_directory:
-            files_directory = f'/tmp/.tdlib_files/{self.phone}/'
+            hasher = hashlib.md5()
+            hasher.update(
+                (self.phone or self.bot_token).encode('utf-8')  # type: ignore
+            )
+            directory_name = hasher.hexdigest()
+            files_directory = f'/tmp/.tdlib_files/{directory_name}/'
+
         self.files_directory = files_directory
 
         self._authorized = False
diff --git a/tests/test_telegram_methods.py b/tests/test_telegram_methods.py
index 3ba85d0b..ada7e9e3 100644
--- a/tests/test_telegram_methods.py
+++ b/tests/test_telegram_methods.py
@@ -236,6 +236,7 @@ def test_get_chat_history(self, telegram):
 
     def test_set_initial_params(self, telegram):
         async_result = telegram._set_initial_params()
+        phone_md5 = '69560384b84c896952ef20352fbce705'
 
         exp_data = {
             '@type': 'setTdlibParameters',
@@ -247,9 +248,9 @@ def test_set_initial_params(self, telegram):
                 'system_version': 'unknown',
                 'application_version': VERSION,
                 'system_language_code': 'en',
-                'database_directory': f'/tmp/.tdlib_files/{PHONE}/database',
+                'database_directory': f'/tmp/.tdlib_files/{phone_md5}/database',
                 'use_message_database': True,
-                'files_directory': f'/tmp/.tdlib_files/{PHONE}/files',
+                'files_directory': f'/tmp/.tdlib_files/{phone_md5}/files',
             },
             '@extra': {'request_id': 'updateAuthorizationState'},
         }