diff --git a/neutronclient/neutron/v2_0/vpn/utils.py b/neutronclient/neutron/v2_0/vpn/utils.py
index cd2f5f0c7..4a3fa6c2a 100644
--- a/neutronclient/neutron/v2_0/vpn/utils.py
+++ b/neutronclient/neutron/v2_0/vpn/utils.py
@@ -22,6 +22,7 @@
 """VPN Utilities and helper functions."""
 
 
+from neutronclient.common import exceptions
 from neutronclient.openstack.common.gettextutils import _
 
 dpd_supported_actions = ['hold', 'clear', 'restart',
@@ -40,7 +41,7 @@ def validate_dpd_dict(dpd_dict):
                 "Reason-Invalid DPD key : "
                 "'%(key)s' not in %(supported_key)s ") % {
                     'key': key, 'supported_key': dpd_supported_keys}
-            raise KeyError(message)
+            raise exceptions.CommandError(message)
         if key == 'action' and value not in dpd_supported_actions:
             message = _(
                 "DPD Dictionary ValueError: "
@@ -48,7 +49,7 @@ def validate_dpd_dict(dpd_dict):
                 "'%(key_value)s' not in %(supported_action)s ") % {
                     'key_value': value,
                     'supported_action': dpd_supported_actions}
-            raise ValueError(message)
+            raise exceptions.CommandError(message)
         if key in ('interval', 'timeout'):
             if int(value) <= 0:
                 message = _(
@@ -56,7 +57,7 @@ def validate_dpd_dict(dpd_dict):
                     "Reason-Invalid positive integer value: "
                     "'%(key)s' = %(value)i ") % {
                         'key': key, 'value': int(value)}
-                raise ValueError(message)
+                raise exceptions.CommandError(message)
             else:
                 dpd_dict[key] = int(value)
     return
@@ -78,7 +79,7 @@ def validate_lifetime_dict(lifetime_dict):
                 "Reason-Invalid units : "
                 "'%(key_value)s' not in %(supported_units)s ") % {
                     'key_value': key, 'supported_units': lifetime_units}
-            raise ValueError(message)
+            raise exceptions.CommandError(message)
         if key == 'value':
             if int(value) < 60:
                 message = _(
@@ -86,7 +87,7 @@ def validate_lifetime_dict(lifetime_dict):
                     "Reason-Invalid value should be at least 60:"
                     "'%(key_value)s' = %(value)i ") % {
                         'key_value': key, 'value': int(value)}
-                raise ValueError(str(message))
+                raise exceptions.CommandError(str(message))
             else:
                 lifetime_dict['value'] = int(value)
     return
diff --git a/tests/unit/vpn/test_cli20_ipsec_site_connection.py b/tests/unit/vpn/test_cli20_ipsec_site_connection.py
index a01acde80..cc66a104e 100644
--- a/tests/unit/vpn/test_cli20_ipsec_site_connection.py
+++ b/tests/unit/vpn/test_cli20_ipsec_site_connection.py
@@ -19,6 +19,7 @@
 
 import sys
 
+from neutronclient.common import exceptions
 from neutronclient.neutron.v2_0.vpn import ipsec_site_connection
 from tests.unit import test_cli20
 
@@ -166,7 +167,7 @@ class CLITestV20IPsecSiteConnectionJSON(test_cli20.CLITestV20Base):
                            initiator, description,
                            vpnservice_id, ikepolicy_id, ipsecpolicy_id]
         self.assertRaises(
-            Exception,
+            exceptions.CommandError,
             self._test_create_resource,
             resource, cmd, name, my_id, args,
             position_names, position_values)
@@ -213,7 +214,7 @@ class CLITestV20IPsecSiteConnectionJSON(test_cli20.CLITestV20Base):
                            initiator, description,
                            vpnservice_id, ikepolicy_id, ipsecpolicy_id]
         self.assertRaises(
-            Exception,
+            exceptions.CommandError,
             self._test_create_resource,
             resource, cmd, name, my_id, args,
             position_names, position_values)
diff --git a/tests/unit/vpn/test_utils.py b/tests/unit/vpn/test_utils.py
index fe59fb4c7..18c0241f2 100644
--- a/tests/unit/vpn/test_utils.py
+++ b/tests/unit/vpn/test_utils.py
@@ -19,6 +19,7 @@
 
 import testtools
 
+from neutronclient.common import exceptions
 from neutronclient.common import utils
 from neutronclient.neutron.v2_0.vpn import utils as vpn_utils
 
@@ -121,12 +122,12 @@ class TestVPNUtils(testtools.TestCase):
 
     def _test_validate_lifetime_negative_test_case(self, input_str):
         """Generic handler for negative lifetime tests."""
-        self.assertRaises(Exception,
+        self.assertRaises(exceptions.CommandError,
                           vpn_utils.validate_lifetime_dict,
                           (input_str))
 
     def _test_validate_dpd_negative_test_case(self, input_str):
         """Generic handler for negative lifetime tests."""
-        self.assertRaises(Exception,
+        self.assertRaises(exceptions.CommandError,
                           vpn_utils.validate_lifetime_dict,
                           (input_str))