diff --git a/swift/common/middleware/gatekeeper.py b/swift/common/middleware/gatekeeper.py
index 17a985defd..511394691a 100644
--- a/swift/common/middleware/gatekeeper.py
+++ b/swift/common/middleware/gatekeeper.py
@@ -109,15 +109,14 @@ class GatekeeperMiddleware(object):
                     ]
 
             response_headers = fixed_response_headers()
-            removed = filter(
-                lambda h: self.outbound_condition(h[0]),
-                response_headers)
+            removed = [(header, value) for header, value in response_headers
+                       if self.outbound_condition(header)]
 
             if removed:
                 self.logger.debug('removed response headers: %s' % removed)
-                new_headers = filter(
-                    lambda h: not self.outbound_condition(h[0]),
-                    response_headers)
+                new_headers = [
+                    (header, value) for header, value in response_headers
+                    if not self.outbound_condition(header)]
                 return start_response(status, new_headers, exc_info)
             return start_response(status, response_headers, exc_info)
         return self.app(env, gatekeeper_response)
diff --git a/swift/proxy/controllers/info.py b/swift/proxy/controllers/info.py
index 89c5a8b3bf..1d148e9988 100644
--- a/swift/proxy/controllers/info.py
+++ b/swift/proxy/controllers/info.py
@@ -103,5 +103,5 @@ class InfoController(Controller):
 
         return HTTPOk(request=req,
                       headers=headers,
-                      body=info,
+                      body=info.encode('ascii'),
                       content_type='application/json; charset=UTF-8')
diff --git a/swift/proxy/server.py b/swift/proxy/server.py
index acc8bc7c36..51ca3fc24d 100644
--- a/swift/proxy/server.py
+++ b/swift/proxy/server.py
@@ -649,11 +649,13 @@ class Application(object):
                 kwargs['exc_info'] = sys.exc_info()
         else:
             log = self.logger.exception
+        if isinstance(additional_info, bytes):
+            additional_info = additional_info.decode('utf-8')
         log(_('ERROR with %(type)s server %(ip)s:%(port)s/%(device)s'
               ' re: %(info)s'),
             {'type': typ, 'ip': node['ip'],
              'port': node['port'], 'device': node['device'],
-             'info': additional_info.decode('utf-8')},
+             'info': additional_info},
             **kwargs)
 
     def modify_wsgi_pipeline(self, pipe):
diff --git a/test/unit/proxy/controllers/test_info.py b/test/unit/proxy/controllers/test_info.py
index 2317acfbe1..e9ba2a76aa 100644
--- a/test/unit/proxy/controllers/test_info.py
+++ b/test/unit/proxy/controllers/test_info.py
@@ -62,7 +62,7 @@ class TestInfoController(unittest.TestCase):
         resp = controller.GET(req)
         self.assertIsInstance(resp, HTTPException)
         self.assertEqual('200 OK', str(resp))
-        info = json.loads(resp.body)
+        info = json.loads(resp.body.decode('ascii'))
         self.assertNotIn('admin', info)
         self.assertIn('foo', info)
         self.assertIn('bar', info['foo'])
@@ -89,7 +89,7 @@ class TestInfoController(unittest.TestCase):
         resp = controller.GET(req)
         self.assertIsInstance(resp, HTTPException)
         self.assertEqual('200 OK', str(resp))
-        info = json.loads(resp.body)
+        info = json.loads(resp.body.decode('ascii'))
         self.assertNotIn('admin', info)
         self.assertIn('foo', info)
         self.assertIn('bar', info['foo'])
@@ -120,7 +120,7 @@ class TestInfoController(unittest.TestCase):
         resp = controller.GET(req)
         self.assertIsInstance(resp, HTTPException)
         self.assertEqual('200 OK', str(resp))
-        info = json.loads(resp.body)
+        info = json.loads(resp.body.decode('ascii'))
         self.assertIn('foo', info)
         self.assertIn('bar', info['foo'])
         self.assertEqual(info['foo']['bar'], 'baz')
@@ -156,7 +156,7 @@ class TestInfoController(unittest.TestCase):
         resp = controller.GET(req)
         self.assertIsInstance(resp, HTTPException)
         self.assertEqual('200 OK', str(resp))
-        info = json.loads(resp.body)
+        info = json.loads(resp.body.decode('ascii'))
         self.assertIn('admin', info)
         self.assertIn('qux', info['admin'])
         self.assertIn('quux', info['admin']['qux'])
@@ -279,7 +279,7 @@ class TestInfoController(unittest.TestCase):
         resp = controller.GET(req)
         self.assertIsInstance(resp, HTTPException)
         self.assertEqual('200 OK', str(resp))
-        info = json.loads(resp.body)
+        info = json.loads(resp.body.decode('ascii'))
         self.assertNotIn('foo2', info)
         self.assertIn('admin', info)
         self.assertIn('disallowed_sections', info['admin'])
diff --git a/tox.ini b/tox.ini
index 2d9ded8ad2..47b5f55d0f 100644
--- a/tox.ini
+++ b/tox.ini
@@ -54,7 +54,8 @@ commands =
       test/unit/common/test_storage_policy.py \
       test/unit/common/test_swob.py \
       test/unit/common/test_utils.py \
-      test/unit/common/test_wsgi.py}
+      test/unit/common/test_wsgi.py \
+      test/unit/proxy/controllers/test_info.py}
 
 [testenv:py36]
 commands = {[testenv:py35]commands}