diff --git a/tractor/__init__.py b/tractor/__init__.py
index 9837383..aa26210 100644
--- a/tractor/__init__.py
+++ b/tractor/__init__.py
@@ -46,7 +46,10 @@ from ._exceptions import (
     ModuleNotExposed,
     ContextCancelled,
 )
-from ._debug import breakpoint, post_mortem
+from ._debug import (
+    breakpoint,
+    post_mortem,
+)
 from . import msg
 from ._root import (
     run_daemon,