diff --git a/src/dbt_score/rules/generic.py b/src/dbt_score/rules/generic.py
index 664f97f..0a0c6d8 100644
--- a/src/dbt_score/rules/generic.py
+++ b/src/dbt_score/rules/generic.py
@@ -1,8 +1,9 @@
 """All generic rules."""
-
 from dbt_score.models import Model
 from dbt_score.rule import RuleViolation, rule
 
+# mypy: disable-error-code="return"
+
 
 @rule()
 def has_description(model: Model) -> RuleViolation | None:
@@ -10,8 +11,6 @@ def has_description(model: Model) -> RuleViolation | None:
     if not model.description:
         return RuleViolation(message="Model lacks a description.")
 
-    return None
-
 
 @rule()
 def columns_have_description(model: Model) -> RuleViolation | None:
@@ -24,5 +23,3 @@ def columns_have_description(model: Model) -> RuleViolation | None:
             message=f"The following columns lack a description: "
             f"{', '.join(invalid_column_names)}."
         )
-
-    return None
diff --git a/tests/conftest.py b/tests/conftest.py
index ff6ee77..782c622 100644
--- a/tests/conftest.py
+++ b/tests/conftest.py
@@ -19,8 +19,9 @@ def pytest_sessionfinish(session: Session, exitstatus: int):
 def raw_manifest() -> Any:
     """Mock the raw manifest."""
     return json.loads(
-        (Path(__file__).parent / "resources" / "manifest.json")
-        .read_text(encoding="utf-8")
+        (Path(__file__).parent / "resources" / "manifest.json").read_text(
+            encoding="utf-8"
+        )
     )