diff --git a/noxfile.py b/noxfile.py
index 17d9d37..f056b7a 100644
--- a/noxfile.py
+++ b/noxfile.py
@@ -1,4 +1,4 @@
-import nox  # type: ignore
+import nox
 
 
 @nox.session(python=["3.7", "3.8", "3.9"])
diff --git a/src/habitmove/__init__.py b/src/habitmove/__init__.py
index 6c60766..fcbc880 100644
--- a/src/habitmove/__init__.py
+++ b/src/habitmove/__init__.py
@@ -4,6 +4,6 @@ import sys
 try:
     from importlib.metadata import version as metadata_version
 except ImportError:
-    from importlib_metadata import version as metadata_version  # type: ignore
+    from importlib_metadata import version as metadata_version
 
 __version__ = str(metadata_version(__name__))
diff --git a/src/habitmove/repetitions.py b/src/habitmove/repetitions.py
index 63ce416..0d1ffa9 100644
--- a/src/habitmove/repetitions.py
+++ b/src/habitmove/repetitions.py
@@ -55,11 +55,10 @@ def habit_list_add_ids(c: sqlite3.Cursor, habitlist: list[Habit]) -> dict[int, H
     :return habit_id_dict: The habit collection as a dict with the keys
                                  consisting of the habit's sqlite database ID.
     """
-    with_id: dict[int, Habit] = {}
+    with_id = {}
     for h in habitlist:
         sql_id = fetch_habit_id(c, h.uuid or "")
-        if sql_id is not None:
-            with_id[sql_id] = h
+        with_id[sql_id] = h
 
     return with_id
 
@@ -75,8 +74,6 @@ def fetch_habit_id(cursor: sqlite3.Cursor, uuid: str) -> Optional[int]:
     if id is not None:
         return id[0]
 
-    return None
-
 
 def add_to_database(
     cursor: sqlite3.Cursor, habits: dict[int, Habit], repetition: Repetition