diff --git a/python/ray/_raylet.pyx b/python/ray/_raylet.pyx
index b287e60c4..a5a6981d7 100644
--- a/python/ray/_raylet.pyx
+++ b/python/ray/_raylet.pyx
@@ -354,7 +354,7 @@ cdef class RayletClient:
         cdef CActorCheckpointID checkpoint_id
         check_status(self.client.get().PrepareActorCheckpoint(
             actor_id.data, checkpoint_id))
-        return ObjectID.from_native(checkpoint_id)
+        return ActorCheckpointID.from_native(checkpoint_id)
 
     def notify_actor_resumed_from_checkpoint(self, ActorID actor_id,
                                              ActorCheckpointID checkpoint_id):
diff --git a/python/ray/includes/unique_ids.pxi b/python/ray/includes/unique_ids.pxi
index 358d67b3e..9774c285b 100644
--- a/python/ray/includes/unique_ids.pxi
+++ b/python/ray/includes/unique_ids.pxi
@@ -74,7 +74,7 @@ cdef class UniqueID:
         return self.data.is_nil()
 
     def __eq__(self, other):
-        return self.binary() == other.binary()
+        return type(self) == type(other) and self.binary() == other.binary()
 
     def __ne__(self, other):
         return self.binary() != other.binary()
@@ -263,7 +263,7 @@ cdef class ActorCheckpointID(UniqueID):
 
     @staticmethod
     cdef from_native(const CActorCheckpointID& cpp_id):
-        cdef ActorCheckpointID self = ActorCheckpointID.__new__(ActorHandleID)
+        cdef ActorCheckpointID self = ActorCheckpointID.__new__(ActorCheckpointID)
         self.data = cpp_id
         return self