2 files changed, 3 insertions, 2 deletions

diff --git a/aoc/__init__.py b/aoc/__init__.py
index 0257b69..f490bf8 100644
--- a/aoc/__init__.py
+++ b/aoc/__init__.py
@@ -17,7 +17,8 @@ class BaseAssignment(Generic[T, I], ABC):
     def __str__(self):
         return f"{self.__module__}.{self.__class__.__name__}"
 
-    def parse_item(self, item: str) -> Iterator[I]:
+    @classmethod
+    def parse_item(cls, item: str) -> Iterator[I]:
         yield item
 
     @property
diff --git a/aoc/__main__.py b/aoc/__main__.py
index 596abee..96a9b7f 100644
--- a/aoc/__main__.py
+++ b/aoc/__main__.py
@@ -38,7 +38,7 @@ def run(
 
     Assignment = getattr(assignment_day, f"Assignment{AssignmentPart(part).name}")
     assignment = Assignment(
-        path=os.path.dirname(assignment_day.__file__), **dict(kwargs)
+        path=os.path.dirname(assignment_day.__file__), **dict(kwargs or {})
     )
 
     start = perf_counter()