--- a/proxmoxer/core.py   1970-01-01 04:00:01.000000000 +0400
+++ b/proxmoxer/core.py   2018-10-29 15:21:20.241881023 +0400
@@ -76,7 +76,7 @@
 
         if resp.status_code >= 400:
             raise ResourceException("{0} {1}: {2}".format(resp.status_code, httplib.responses[resp.status_code],
-                                                          resp.content))
+                                                          resp.reason))
         elif 200 <= resp.status_code <= 299:
             return self._store["serializer"].loads(resp)

diff --git a/proxmoxer/backends/https.py b/proxmoxer/backends/https.py
index ad76a47..e96b822 100644
--- a/proxmoxer/backends/https.py
+++ b/proxmoxer/backends/https.py
@@ -38,9 +38,10 @@ class AuthenticationError(Exception):
 
 
 class ProxmoxHTTPAuth(AuthBase):
-    def __init__(self, base_url, username, password, verify_ssl=False):
+    def __init__(self, base_url, username, password, verify_ssl=False, timeout=5):
         response_data = requests.post(base_url + "/access/ticket",
                                       verify=verify_ssl,
+                                      timeout=timeout,
                                       data={"username": username, "password": password}).json()["data"]
         if response_data is None:
             raise AuthenticationError("Couldn't authenticate user: {0} to {1}".format(username, base_url + "/access/ticket"))
@@ -122,7 +123,7 @@ class Backend(object):
         if auth_token is not None:
             self.auth = ProxmoxHTTPTokenAuth(auth_token, csrf_token)
         else:
-            self.auth = ProxmoxHTTPAuth(self.base_url, user, password, verify_ssl)
+            self.auth = ProxmoxHTTPAuth(self.base_url, user, password, verify_ssl, timeout)
         self.verify_ssl = verify_ssl
         self.mode = mode
         self.timeout = timeout
diff --git a/proxmoxer/backends/base_ssh.py b/proxmoxer/backends/base_ssh.py
index da624d9..b3ba1b3 100644
--- a/proxmoxer/backends/base_ssh.py
+++ b/proxmoxer/backends/base_ssh.py
@@ -41,7 +41,7 @@ class ProxmoxBaseSSHSession(object):
             data['tmpfilename'] = tmp_filename
 
         translated_data = ' '.join(["-{0} {1}".format(k, v) for k, v in chain(data.items(), params.items())])
-        full_cmd = 'pvesh {0}'.format(' '.join(filter(None, (cmd, url, translated_data))))
+        full_cmd = 'pvesh {0} --output-format json'.format(' '.join(filter(None, (cmd, url, translated_data))))
 
         stdout, stderr = self._exec(full_cmd)
         match = lambda s: re.match('\d\d\d [a-zA-Z]', s)
diff --git a/tests/base/base_ssh_suite.py b/tests/base/base_ssh_suite.py
index 943b72f..ddb4bf3 100644
--- a/tests/base/base_ssh_suite.py
+++ b/tests/base/base_ssh_suite.py
@@ -62,7 +62,7 @@ class BaseSSHSuite(object):
                }
             ]""")
         result = self.proxmox.nodes('proxmox').storage('local').get()
-        eq_(self._get_called_cmd(), self._called_cmd('pvesh get /nodes/proxmox/storage/local'))
+        eq_(self._get_called_cmd(), self._called_cmd('pvesh get /nodes/proxmox/storage/local --output-format json'))
         eq_(result[0]['subdir'], 'status')
         eq_(result[1]['subdir'], 'content')
         eq_(result[2]['subdir'], 'upload')
@@ -71,13 +71,13 @@ class BaseSSHSuite(object):
 
     def test_delete(self):
         self.proxmox.nodes('proxmox').openvz(100).delete()
-        eq_(self._get_called_cmd(), self._called_cmd('pvesh delete /nodes/proxmox/openvz/100'))
+        eq_(self._get_called_cmd(), self._called_cmd('pvesh delete /nodes/proxmox/openvz/100 --output-format json'))
         self._set_stderr("200 OK")
         self.proxmox.nodes('proxmox').openvz('101').delete()
-        eq_(self._get_called_cmd(), self._called_cmd('pvesh delete /nodes/proxmox/openvz/101'))
+        eq_(self._get_called_cmd(), self._called_cmd('pvesh delete /nodes/proxmox/openvz/101 --output-format json'))
         self._set_stderr("200 OK")
         self.proxmox.nodes('proxmox').openvz.delete('102')
-        eq_(self._get_called_cmd(), self._called_cmd('pvesh delete /nodes/proxmox/openvz/102'))
+        eq_(self._get_called_cmd(), self._called_cmd('pvesh delete /nodes/proxmox/openvz/102 --output-format json'))
 
     def test_post(self):
         self._set_stderr("200 OK")