diff --git a/src/pydase/observer_pattern/observable/observable.py b/src/pydase/observer_pattern/observable/observable.py
index 474d684..9299fb3 100644
--- a/src/pydase/observer_pattern/observable/observable.py
+++ b/src/pydase/observer_pattern/observable/observable.py
@@ -24,7 +24,7 @@ class Observable(ObservableObject):
         for name, value in class_attrs.items():
             if isinstance(value, property) or callable(value):
                 continue
-            elif is_descriptor(value):
+            if is_descriptor(value):
                 # Descriptors have to be stored as a class variable in another class to
                 # work properly. So don't make it an instance attribute.
                 self._initialise_new_objects(name, value)
diff --git a/src/pydase/task/task.py b/src/pydase/task/task.py
index e848f1d..257ef98 100644
--- a/src/pydase/task/task.py
+++ b/src/pydase/task/task.py
@@ -80,7 +80,7 @@ class Task(pydase.DataService, Generic[P, R]):
         # containing the function
         if instance:
 
-            async def bound_func(*args, **kwargs) -> R | None:
+            async def bound_func(*args: P.args, **kwargs: P.kwargs) -> R | None:
                 return await self._func(instance, *args, **kwargs)
 
             self._bound_func = bound_func
diff --git a/src/pydase/utils/helpers.py b/src/pydase/utils/helpers.py
index a1812fd..3c5269f 100644
--- a/src/pydase/utils/helpers.py
+++ b/src/pydase/utils/helpers.py
@@ -197,6 +197,7 @@ def function_has_arguments(func: Callable[..., Any]) -> bool:
     # Check if there are any parameters left which would indicate additional arguments.
     return len(parameters) > 0
 
-def is_descriptor(obj):
+
+def is_descriptor(obj: object) -> bool:
     """Check if an object is a descriptor."""
     return any(hasattr(obj, method) for method in ("__get__", "__set__", "__delete__"))