diff --git a/openbb_terminal/account/account_controller.py b/openbb_terminal/account/account_controller.py
index ca2faefaa2f..6371c9e6019 100644
--- a/openbb_terminal/account/account_controller.py
+++ b/openbb_terminal/account/account_controller.py
@@ -3,7 +3,7 @@ import json
 import logging
 import os
 from pathlib import Path
-from typing import Dict, List
+from typing import Dict, List, Optional
 
 from prompt_toolkit.completion import NestedCompleter
 
@@ -41,7 +41,7 @@ class AccountController(BaseController):
 
     PATH = "/account/"
 
-    def __init__(self, queue: List[str] = None):
+    def __init__(self, queue: Optional[List[str]] = None):
         super().__init__(queue)
         self.ROUTINE_FILES: Dict[str, Path] = {}
         self.REMOTE_CHOICES: List[str] = []
diff --git a/openbb_terminal/stocks/stocks_view.py b/openbb_terminal/stocks/stocks_view.py
index 05b303aac0f..f0c6d050aa2 100644
--- a/openbb_terminal/stocks/stocks_view.py
+++ b/openbb_terminal/stocks/stocks_view.py
@@ -1,5 +1,6 @@
 import logging
 import os
+from typing import Optional
 
 from openbb_terminal.decorators import check_api_key, log_start_end
 from openbb_terminal.helper_funcs import export_data, print_rich_table
@@ -11,7 +12,7 @@ logger = logging.getLogger(__name__)
 
 @log_start_end(log=logger)
 @check_api_key(["API_KEY_FINANCIALMODELINGPREP"])
-def display_quote(symbol: str, export: str = "", sheet_name: str = None):
+def display_quote(symbol: str, export: str = "", sheet_name: Optional[str] = None):
     """Financial Modeling Prep ticker quote
 
     Parameters