diff --git a/neutron/tests/unit/agent/common/test_async_process.py b/neutron/tests/unit/agent/common/test_async_process.py
index d6dc3465135..8db088399c2 100644
--- a/neutron/tests/unit/agent/common/test_async_process.py
+++ b/neutron/tests/unit/agent/common/test_async_process.py
@@ -319,7 +319,7 @@ class TestFailingAsyncProcess(base.BaseTestCase):
     def setUp(self):
         super(TestFailingAsyncProcess, self).setUp()
         path = self.get_temp_file_path('async.tmp', self.get_new_temp_dir())
-        self.process = async_process.AsyncProcess(['python',
+        self.process = async_process.AsyncProcess(['python3',
                                                    failing_process.__file__,
                                                    path],
                                                   respawn_interval=0)