diff --git a/python/ray/worker.py b/python/ray/worker.py
index d05aff40c..a3dd96be1 100644
--- a/python/ray/worker.py
+++ b/python/ray/worker.py
@@ -578,7 +578,7 @@ class Worker(object):
             function_id: The ID of the function to execute.
             args: The arguments to pass into the function. Arguments can be
                 object IDs or they can be values. If they are values, they must
-                be serializable objecs.
+                be serializable objects.
             actor_id: The ID of the actor that this task is for.
             actor_counter: The counter of the actor task.
             is_actor_checkpoint_method: True if this is an actor checkpoint
@@ -782,8 +782,6 @@ class Worker(object):
         been defined.
 
         Args:
-            is_actor (bool): True if this worker is an actor, and false
-                otherwise.
             function_id (str): The ID of the function that we want to execute.
             driver_id (str): The ID of the driver to push the error message to
                 if this times out.
@@ -818,7 +816,7 @@ class Worker(object):
         """Retrieve the arguments for the remote function.
 
         This retrieves the values for the arguments to the remote function that
-        were passed in as object IDs. Argumens that were passed by value are
+        were passed in as object IDs. Arguments that were passed by value are
         not changed. This is called by the worker that is executing the remote
         function.