diff --git a/airtest/core/android/adb.py b/airtest/core/android/adb.py
index ebc166d7..fd74b8b1 100644
--- a/airtest/core/android/adb.py
+++ b/airtest/core/android/adb.py
@@ -483,7 +483,7 @@ def pull(self, remote, local):
             None
         """
         local = decode_path(local)  # py2
-        if PY34:
+        if PY3:
             # If it is PY3.4 or above, use Path to force / convert to \
             from pathlib import Path
             local = Path(local).as_posix()
diff --git a/airtest/core/android/rotation.py b/airtest/core/android/rotation.py
index 41572f08..334abeab 100644
--- a/airtest/core/android/rotation.py
+++ b/airtest/core/android/rotation.py
@@ -3,7 +3,7 @@
 import time
 import threading
 import traceback
-from airtest.utils.snippet import reg_cleanup, is_exiting, on_method_ready
+from airtest.utils.snippet import reg_cleanup, is_exiting, on_method_ready, kill_proc
 from airtest.utils.nbsp import NonBlockingStreamReader
 from airtest.utils.logger import get_logger
 from airtest.core.android.constant import ORI_METHOD, ROTATIONWATCHER_JAR
@@ -92,9 +92,7 @@ def setup_server(self):
     def teardown(self):
         self._t_kill_event.set()
         if self.ow_proc:
-            self.ow_proc.kill()
-            # close io.Buffer
-            self.ow_proc.communicate()
+            kill_proc(self.ow_proc)
         if self.nbsp:
             self.nbsp.kill()
         self.ow_callback = []