diff --git a/tg/controllers.py b/tg/controllers.py
index e608d94..300e3d2 100644
--- a/tg/controllers.py
+++ b/tg/controllers.py
@@ -427,8 +427,7 @@ class Controller:
         self.tg.send_video(file_path, chat_id, width, height, duration)
 
     def send_file(
-        self,
-        send_file_fun: Callable[[str, int], AsyncResult],
+        self, send_file_fun: Callable[[str, int], AsyncResult],
     ) -> None:
         _input = self.view.status.get_input()
         if _input is None:
@@ -552,10 +551,7 @@ class Controller:
     def _get_user_ids(self, is_multiple: bool = False) -> List[int]:
         users = self.model.users.get_users()
         _, cols = self.view.stdscr.getmaxyx()
-        limit = min(
-            int(cols / 2),
-            max(len(user.name) for user in users),
-        )
+        limit = min(int(cols / 2), max(len(user.name) for user in users),)
         users_out = "\n".join(
             f"{user.id}\t{user.name:<{limit}} | {user.status}"
             for user in sorted(users, key=lambda user: user.order)
diff --git a/tg/tdlib.py b/tg/tdlib.py
index 17b1023..a77223c 100644
--- a/tg/tdlib.py
+++ b/tg/tdlib.py
@@ -294,50 +294,35 @@ class Tdlib(Telegram):
         }
         return self._send_data(data)
 
-    def get_basic_group(
-        self,
-        basic_group_id: int,
-    ) -> AsyncResult:
+    def get_basic_group(self, basic_group_id: int,) -> AsyncResult:
         data = {
             "@type": "getBasicGroup",
             "basic_group_id": basic_group_id,
         }
         return self._send_data(data)
 
-    def get_basic_group_full_info(
-        self,
-        basic_group_id: int,
-    ) -> AsyncResult:
+    def get_basic_group_full_info(self, basic_group_id: int,) -> AsyncResult:
         data = {
             "@type": "getBasicGroupFullInfo",
             "basic_group_id": basic_group_id,
         }
         return self._send_data(data)
 
-    def get_supergroup(
-        self,
-        supergroup_id: int,
-    ) -> AsyncResult:
+    def get_supergroup(self, supergroup_id: int,) -> AsyncResult:
         data = {
             "@type": "getSupergroup",
             "supergroup_id": supergroup_id,
         }
         return self._send_data(data)
 
-    def get_supergroup_full_info(
-        self,
-        supergroup_id: int,
-    ) -> AsyncResult:
+    def get_supergroup_full_info(self, supergroup_id: int,) -> AsyncResult:
         data = {
             "@type": "getSupergroupFullInfo",
             "supergroup_id": supergroup_id,
         }
         return self._send_data(data)
 
-    def get_secret_chat(
-        self,
-        secret_chat_id: int,
-    ) -> AsyncResult:
+    def get_secret_chat(self, secret_chat_id: int,) -> AsyncResult:
         data = {
             "@type": "getSecretChat",
             "secret_chat_id": secret_chat_id,
diff --git a/tg/utils.py b/tg/utils.py
index a8b7d58..65c36d7 100644
--- a/tg/utils.py
+++ b/tg/utils.py
@@ -85,7 +85,9 @@ def get_file_handler(file_path: str) -> str:
         return config.DEFAULT_OPEN.format(file_path=shlex.quote(file_path))
 
     caps = get_mailcap()
-    handler, view = mailcap.findmatch(caps, mtype, filename=file_path)
+    handler, view = mailcap.findmatch(
+        caps, mtype, filename=shlex.quote(file_path)
+    )
     if not handler:
         return config.DEFAULT_OPEN.format(file_path=shlex.quote(file_path))
     return handler
@@ -102,16 +104,7 @@ def parse_size(size: str) -> int:
 def humanize_size(
     num: int,
     suffix: str = "B",
-    suffixes: Tuple[str, ...] = (
-        "",
-        "K",
-        "M",
-        "G",
-        "T",
-        "P",
-        "E",
-        "Z",
-    ),
+    suffixes: Tuple[str, ...] = ("", "K", "M", "G", "T", "P", "E", "Z",),
 ) -> str:
     magnitude = int(math.floor(math.log(num, 1024)))
     val = num / math.pow(1024, magnitude)
diff --git a/tg/views.py b/tg/views.py
index 6ecc37a..d4806e2 100644
--- a/tg/views.py
+++ b/tg/views.py
@@ -280,11 +280,7 @@ class ChatView:
 
 
 class MsgView:
-    def __init__(
-        self,
-        stdscr: window,
-        model: Model,
-    ) -> None:
+    def __init__(self, stdscr: window, model: Model,) -> None:
         self.model = model
         self.stdscr = stdscr
         self.h = 0