diff --git a/unit_tests/test_zaza_charm_lifecycle_func_test_runner.py b/unit_tests/test_zaza_charm_lifecycle_func_test_runner.py
index 9312a29..43ce7b7 100644
--- a/unit_tests/test_zaza_charm_lifecycle_func_test_runner.py
+++ b/unit_tests/test_zaza_charm_lifecycle_func_test_runner.py
@@ -25,6 +25,8 @@ class TestCharmLifecycleFuncTestRunner(ut_utils.BaseTestCase):
         self.assertTrue(args.smoke)
         args = lc_func_test_runner.parse_args(['--bundle', 'mybundle'])
         self.assertEqual(args.bundle, 'mybundle')
+        args = lc_func_test_runner.parse_args(['--log', 'DEBUG'])
+        self.assertEqual(args.loglevel, 'DEBUG')
 
     def test_func_test_runner(self):
         self.patch_object(lc_func_test_runner.utils, 'get_charm_config')
@@ -121,3 +123,30 @@ class TestCharmLifecycleFuncTestRunner(ut_utils.BaseTestCase):
         deploy_calls = [
             mock.call('./tests/bundles/maveric-filebeat.yaml', 'newmodel')]
         self.deploy.assert_has_calls(deploy_calls)
+
+    def test_main_loglevel(self):
+        self.patch_object(lc_func_test_runner, 'parse_args')
+        self.patch_object(lc_func_test_runner, 'logging')
+        self.patch_object(lc_func_test_runner, 'func_test_runner')
+        self.patch_object(lc_func_test_runner, 'asyncio')
+        _args = mock.Mock()
+        _args.loglevel = 'DeBuG'
+        self.parse_args.return_value = _args
+        self.logging.DEBUG = 10
+        lc_func_test_runner.main()
+        self.logging.basicConfig.assert_called_with(level=10)
+
+    def test_main_loglevel_invalid(self):
+        self.patch_object(lc_func_test_runner, 'parse_args')
+        self.patch_object(lc_func_test_runner, 'logging')
+        self.patch_object(lc_func_test_runner, 'func_test_runner')
+        self.patch_object(lc_func_test_runner, 'asyncio')
+        _args = mock.Mock()
+        _args.loglevel = 'invalid'
+        self.parse_args.return_value = _args
+        with self.assertRaises(ValueError) as context:
+            lc_func_test_runner.main()
+        self.assertEqual(
+            'Invalid log level: "invalid"',
+            str(context.exception))
+        self.assertFalse(self.logging.basicConfig.called)
diff --git a/zaza/charm_lifecycle/func_test_runner.py b/zaza/charm_lifecycle/func_test_runner.py
index 2c0df11..3969d0d 100644
--- a/zaza/charm_lifecycle/func_test_runner.py
+++ b/zaza/charm_lifecycle/func_test_runner.py
@@ -75,13 +75,20 @@ def parse_args(args):
     parser.add_argument('-b', '--bundle',
                         help='Override the bundle to be run',
                         required=False)
-    parser.set_defaults(keep_model=False, smoke=False)
+    parser.add_argument('--log', dest='loglevel',
+                        help='Loglevel [DEBUG|INFO|WARN|ERROR|CRITICAL]')
+    parser.set_defaults(keep_model=False, smoke=False, loglevel='INFO')
     return parser.parse_args(args)
 
 
 def main():
-    logging.basicConfig(level=logging.INFO)
     args = parse_args(sys.argv[1:])
+
+    level = getattr(logging, args.loglevel.upper(), None)
+    if not isinstance(level, int):
+        raise ValueError('Invalid log level: "{}"'.format(args.loglevel))
+    logging.basicConfig(level=level)
+
     func_test_runner(
         keep_model=args.keep_model,
         smoke=args.smoke,