diff --git a/selfprivacy_api/actions/api_tokens.py b/selfprivacy_api/actions/api_tokens.py
index 520c875..37b7631 100644
--- a/selfprivacy_api/actions/api_tokens.py
+++ b/selfprivacy_api/actions/api_tokens.py
@@ -27,6 +27,7 @@ class TokenInfoWithIsCaller(BaseModel):
     date: datetime
     is_caller: bool
 
+
 def _naive(date_time: datetime) -> datetime:
     if date_time is None:
         return None
@@ -34,6 +35,7 @@ def _naive(date_time: datetime) -> datetime:
         date_time.astimezone(timezone.utc)
     return date_time.replace(tzinfo=None)
 
+
 def get_api_tokens_with_caller_flag(caller_token: str) -> list[TokenInfoWithIsCaller]:
     """Get the tokens info"""
     caller_name = TOKEN_REPO.get_token_by_token_string(caller_token).device_name
@@ -91,9 +93,6 @@ class RecoveryTokenStatus(BaseModel):
     uses_left: Optional[int] = None
 
 
-
-
-
 def get_api_recovery_token_status() -> RecoveryTokenStatus:
     """Get the recovery token status"""
     token = TOKEN_REPO.get_recovery_key()
diff --git a/selfprivacy_api/models/tokens/time.py b/selfprivacy_api/models/tokens/time.py
index 35fd992..967fcfb 100644
--- a/selfprivacy_api/models/tokens/time.py
+++ b/selfprivacy_api/models/tokens/time.py
@@ -1,13 +1,14 @@
 from datetime import datetime, timezone
 
+
 def is_past(dt: datetime) -> bool:
     # we cannot compare a naive now()
     # to dt which might be tz-aware or unaware
     dt = ensure_timezone(dt)
     return dt < datetime.now(timezone.utc)
 
-def ensure_timezone(dt:datetime) -> datetime:
+
+def ensure_timezone(dt: datetime) -> datetime:
     if dt.tzinfo is None or dt.tzinfo.utcoffset(None) is None:
-        dt = dt.replace(tzinfo= timezone.utc)
-    return dt 
-    
+        dt = dt.replace(tzinfo=timezone.utc)
+    return dt