diff --git a/lib/ansible/modules/network/f5/bigip_pool.py b/lib/ansible/modules/network/f5/bigip_pool.py
index b87ba1e0f3..60f74bd541 100644
--- a/lib/ansible/modules/network/f5/bigip_pool.py
+++ b/lib/ansible/modules/network/f5/bigip_pool.py
@@ -289,7 +289,6 @@ reselect_tries:
 '''
 
 import re
-import os
 
 from ansible.module_utils.f5_utils import AnsibleF5Client
 from ansible.module_utils.f5_utils import AnsibleF5Parameters
@@ -392,9 +391,7 @@ class Parameters(AnsibleF5Parameters):
                 )
             )
             lb_method = lb_map.get(lb_method, lb_method.replace('_', '-'))
-        try:
-            assert lb_method in spec.lb_choice
-        except AssertionError:
+        if lb_method not in spec.lb_choice:
             raise F5ModuleError('Provided lb_method is unknown')
         return lb_method
 
@@ -893,6 +890,16 @@ class ArgumentSpec(object):
         self.f5_product_name = 'bigip'
 
 
+def cleanup_tokens(client):
+    try:
+        resource = client.api.shared.authz.tokens_s.token.load(
+            name=client.api.icrs.token
+        )
+        resource.delete()
+    except Exception:
+        pass
+
+
 def main():
     if not HAS_F5SDK:
         raise F5ModuleError("The python f5-sdk module is required")
@@ -908,8 +915,10 @@ def main():
     try:
         mm = ModuleManager(client)
         results = mm.exec_module()
+        cleanup_tokens(client)
         client.module.exit_json(**results)
     except F5ModuleError as e:
+        cleanup_tokens(client)
         client.module.fail_json(msg=str(e))
 
 
diff --git a/test/units/modules/network/f5/test_bigip_pool.py b/test/units/modules/network/f5/test_bigip_pool.py
index bb7fdbc6b0..a6b4277ba6 100644
--- a/test/units/modules/network/f5/test_bigip_pool.py
+++ b/test/units/modules/network/f5/test_bigip_pool.py
@@ -1,21 +1,7 @@
 # -*- coding: utf-8 -*-
 #
-# Copyright 2017 F5 Networks Inc.
-#
-# This file is part of Ansible
-#
-# Ansible is free software: you can redistribute it and/or modify
-# it under the terms of the GNU General Public License as published by
-# the Free Software Foundation, either version 3 of the License, or
-# (at your option) any later version.
-#
-# Ansible is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public Liccense for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with Ansible.  If not, see <http://www.gnu.org/licenses/>.
+# Copyright (c) 2017 F5 Networks Inc.
+# GNU General Public License v3.0 (see COPYING or https://www.gnu.org/licenses/gpl-3.0.txt)
 
 from __future__ import (absolute_import, division, print_function)
 __metaclass__ = type
@@ -171,8 +157,8 @@ class TestManager(unittest.TestCase):
         )
 
         mm = ModuleManager(client)
-        mm.create_on_device = lambda: True
-        mm.exists = lambda: False
+        mm.create_on_device = Mock(return_value=True)
+        mm.exists = Mock(return_value=False)
 
         results = mm.exec_module()