diff --git a/metaopt/invoker/dualthread.py b/metaopt/invoker/dualthread.py
index d277ca6..1747743 100644
--- a/metaopt/invoker/dualthread.py
+++ b/metaopt/invoker/dualthread.py
@@ -8,7 +8,7 @@
 
 from metaopt.core.call import call
 from metaopt.invoker.base import BaseInvoker
-from metaopt.invoker.util.task_handle import CallHandle
+from metaopt.invoker.util.call_handle import CallHandle
 from metaopt.util.stoppable import stoppable_method, stopping_method
 
 
diff --git a/metaopt/invoker/multiprocess.py b/metaopt/invoker/multiprocess.py
index d3d460b..acab453 100644
--- a/metaopt/invoker/multiprocess.py
+++ b/metaopt/invoker/multiprocess.py
@@ -11,7 +11,7 @@
 from metaopt.invoker.util.determine_package import determine_package
 from metaopt.invoker.util.model import Call, Error, Release, Result, Task
 from metaopt.invoker.util.status_db import StatusDB
-from metaopt.invoker.util.task_handle import CallHandle
+from metaopt.invoker.util.call_handle import CallHandle
 from metaopt.invoker.util.worker_provider import WorkerProcessProvider
 from metaopt.util.stoppable import StoppedException, stoppable_method, \
     stopping_method
diff --git a/metaopt/invoker/util/task_handle.py b/metaopt/invoker/util/call_handle.py
similarity index 100%
rename from metaopt/invoker/util/task_handle.py
rename to metaopt/invoker/util/call_handle.py