diff --git a/neutron/agent/linux/utils.py b/neutron/agent/linux/utils.py
index ff85785186a..2f082485772 100644
--- a/neutron/agent/linux/utils.py
+++ b/neutron/agent/linux/utils.py
@@ -314,20 +314,18 @@ def get_cmdline_from_pid(pid):
     if not process_is_running(pid):
         return []
     with open('/proc/%s/cmdline' % pid, 'r') as f:
-        cmdline = f.readline()
-        cmdline_args = cmdline.split('\0')[:-1]
+        cmdline = f.readline().split('\0')[:-1]
 
         # NOTE(slaweq): sometimes it may happen that values in
         # /proc/{pid}/cmdline are separated by space instead of NUL char,
         # in such case we would have everything in one element of cmdline_args
         # list and it would not match to expected cmd so we need to try to
         # split it by spaces
-        if len(cmdline_args) == 1:
-            cmdline_args = cmdline_args[0].split(' ')
+        if len(cmdline) == 1:
+            cmdline = cmdline[0].split(' ')
 
-        LOG.debug("Found cmdline %s for rocess with PID %s.",
-                  cmdline_args, pid)
-        return cmdline_args
+        LOG.debug("Found cmdline %s for process with PID %s.", cmdline, pid)
+        return cmdline
 
 
 def cmd_matches_expected(cmd, expected_cmd):
diff --git a/neutron/tests/unit/agent/linux/test_utils.py b/neutron/tests/unit/agent/linux/test_utils.py
index 1b7f64eb856..1c798217a9c 100644
--- a/neutron/tests/unit/agent/linux/test_utils.py
+++ b/neutron/tests/unit/agent/linux/test_utils.py
@@ -322,6 +322,11 @@ class TestGetCmdlineFromPid(base.BaseTestCase):
         expected_cmdline = ["python3", "test-binary", "test", "option"]
         self._test_cmdline(process_cmd, expected_cmdline)
 
+    def test_cmdline_with_single_argument(self):
+        process_cmd = "test-binary\0"
+        expected_cmdline = ["test-binary"]
+        self._test_cmdline(process_cmd, expected_cmdline)
+
     def test_no_process_running(self):
         self.process_is_running_mock.return_value = False
         mock_open = self.useFixture(